Booster Pack Heroes Frenzy Tome Upgrade Reference

Real gameplay reference by FungalBrainRot, observed build v1.0.27D; not official footage or proof of later patch behavior.

What does Frenzy actually improve?

Frenzy upgrades can look like permanent cursor improvements, but their bonuses depend on the tome being active. This Booster Pack Heroes frenzy tome upgrade guide explains that condition so you can spend Mastery with a clear purpose. Use this Booster Pack Heroes frenzy tome upgrade guide to compare attack speed, radius, and critical chance before choosing your next upgrade.

Frenzy is an Epic Tome focused on cursor power. Its observed upgrades improve three separate cursor properties during its active effect. The Frenzy upgrade screen at 51:52 supports these distinctions:

Upgrade	Observed effect	Activation requirement
Accelerated Pulse	Raises cursor attack speed by 20%	Frenzy must be active
Radius Surge	Expands cursor radius by 50%	Frenzy must be active
Veil Erosion	Lists a 5% cursor critical chance effect	Frenzy must be active

The condition matters as much as the number. Buying a Frenzy upgrade does not establish an always-active attack speed, radius, or critical chance bonus. Evaluate what happens during Frenzy separately from how your cursor performs between activations.

This guide uses player experience documented in FungalBrainRot’s November 11 footage. The menu at 47:05 shows v1.0.27D. Those observations do not establish behavior in v1.0.30D. For the game’s official identity and store listing, see the Booster Pack Heroes Steam page.

The central recommendation in this Booster Pack Heroes frenzy tome upgrade guide is to choose an effect you can use during that temporary window. A larger displayed percentage does not automatically make one upgrade the best purchase.

How should you prioritize Frenzy upgrades?

There is no source-supported universal upgrade order. The supplied footage establishes the effects, but it does not provide a controlled comparison of their contribution to progress. The following priorities are recommendations based on those effects, not measured rankings.

Your immediate goal	Upgrade to consider	Reason for the recommendation
Increase cursor attack speed during Frenzy	Accelerated Pulse	Its observed effect directly improves that stat
Expand cursor reach during Frenzy	Radius Surge	Its observed effect increases cursor radius
Add a critical chance effect during Frenzy	Veil Erosion	Its observed effect concerns cursor critical chance

Choose attack speed for an attack speed goal

Accelerated Pulse is the direct option when you specifically want faster cursor attacks during Frenzy. Its observed increase is 20%. That does not establish a 20% increase in total damage, overall clearing speed, or progress.

Those outcomes would require additional evidence about the rest of your setup. Treat the displayed stat as the confirmed benefit, then judge whether it addresses the problem you are trying to solve.

Choose radius for a coverage goal

Radius Surge is the direct option when you want a wider cursor effect during Frenzy. Its 50% value applies to radius. Do not reinterpret it as a 50% damage bonus or a confirmed percentage increase in enemies hit.

For this Booster Pack Heroes frenzy tome upgrade guide, the useful distinction is between reach and attack speed. They improve different properties, so comparing their percentages alone cannot settle which purchase helps your current situation more.

Choose critical chance with the missing details in mind

Veil Erosion provides the critical chance option. The observed display gives a 5% cursor crit chance effect during Frenzy, but the supplied evidence does not establish its stacking formula or resulting critical damage.

That makes a damage-per-Mastery ranking unsupported. If you are still learning how to evaluate individual upgrades, the Booster Pack Heroes beginner guide is a related starting point.

How much Mastery does Radius Surge cost?

The observed next-rank price for Radius Surge is 6,000 Mastery. That figure appears on the Radius Surge screen at 51:49, alongside its Frenzy-dependent radius effect. It is a price for the displayed purchase state, not a complete pricing schedule.

Pricing question	What the supplied evidence establishes
What did the displayed next Radius Surge rank cost?	6,000 Mastery
Is that every Radius Surge rank’s price?	Not established
Do the other Frenzy upgrades share that price?	Not established

The spending rule in this Booster Pack Heroes frenzy tome upgrade guide is to read the current node before committing. Check its name, effect, activation condition, and displayed price together. A number remembered from another rank or another player’s screen may not describe the purchase in front of you.

As a recommendation, compare purchases by the benefit you want first, then by their current costs. If wider reach is your immediate goal, Radius Surge is the relevant candidate. If attack speed is your goal, the radius percentage does not make Radius Surge a substitute for Accelerated Pulse.

You also cannot calculate a reliable “best value” from these percentages alone. Radius, attack speed, and critical chance are different measurements, and the evidence does not supply enough information to convert them into a shared performance score.

For related currency planning, see the Booster Pack Heroes Mastery guide. Keep your final decision tied to the price shown in your own game.

How does Bag of Books support Frenzy?

Bag of Books supports tome availability and duration. In the observed player experience, its description indicates that tomes appear more often and their effects last 30% longer. These are separate benefits shown in the Bag of Books description at 1:33:23.

Bag of Books effect	Supported detail	Missing detail
Tome availability	Makes tomes more likely	Exact probability
Tome duration	Extends tome effects by 30%	Formula when combined with other duration bonuses

This matters because Frenzy’s observed cursor upgrades depend on Frenzy being active. As a recommendation, equipping Bag of Books is worth considering when your plan centers on getting more use from tome effects. Its duration benefit supports the window in which those conditional upgrades apply.

However, longer duration does not turn Accelerated Pulse, Radius Surge, or Veil Erosion into permanent bonuses. The same activation requirement remains. Bag of Books also does not supply a verified Frenzy-specific drop rate: a general increase in tome likelihood is not enough to calculate the chance of receiving a particular tome.

The duration advice in this Booster Pack Heroes frenzy tome upgrade guide deliberately stops at the observed 30% extension. The supplied evidence does not give Frenzy’s base duration or a combined stacking rule, so it cannot support an exact final duration for your setup.

A practical recommendation is to assess both parts of your plan: what your cursor gains during Frenzy, and how often you can benefit from that active period. Neither side alone establishes the strongest overall build.

What happens to Frenzy planning at the Act 3 reset?

The ordinary skill tree resets at the observed transition into Act 3. At Chapter 7, Act 2, The Last Crucible, Gate to the Stars presents the option to begin Act 3. The transition screen at 3:05:32 distinguishes what resets from what carries forward.

Progress category	Observed transition behavior
Ordinary skill tree	Resets
Foilium upgrades	Preserved
Foilium balance	Preserved
Collection	Preserved
Bestiary	Preserved

The important distinction is between ordinary skill tree progress and the categories explicitly preserved by this transition. Keeping your Collection does not mean the ordinary skill tree also remains intact. Likewise, the preserved Foilium balance should not be confused with a promise that every other currency or purchase carries over.

For this Booster Pack Heroes frenzy tome upgrade guide, the practical recommendation is to consider your next objective before spending heavily. If you are preparing to use the Gate to the Stars transition, remember that ordinary skill tree investment belongs to a system that the observed transition resets.

That does not establish that delaying every purchase is optimal. An upgrade may still help you pursue your current objective. The evidence does not provide enough comparative data to decide whether buying now or saving is always faster.

Use this short review before a purchase:

• Identify the cursor property you want to improve.
• Confirm that the benefit applies during Frenzy.
• Read the current Mastery price.
• Consider whether the observed Act 3 reset is relevant to your immediate plan.

The interface spells the persistent currency Foilium. “Folium” is a search variant, including in the filename of the related Foilium farming guide.

FAQ

Are Frenzy’s attack speed, radius, and critical chance bonuses always active?

No. The observed descriptions tie all three effects to Frenzy’s active period. Accelerated Pulse affects attack speed, Radius Surge affects cursor radius, and Veil Erosion concerns cursor critical chance. The upgrade screen at 51:52 does not support treating them as permanent background improvements. Buying a node and meeting its activation condition are separate parts of receiving its benefit.

Does Radius Surge always cost 6,000 Mastery?

The supplied evidence only confirms 6,000 Mastery for the next rank displayed in the observed footage. It does not establish the starting price, every later rank’s cost, or the prices of the other Frenzy upgrades. Check the current purchase screen before budgeting. There is no verified full cost progression here from which to calculate the total Mastery needed.

Does Bag of Books guarantee more Frenzy activations?

The observed description supports greater tome likelihood and 30% longer tome effects. It does not provide a guarantee for Frenzy specifically or an exact spawn probability. Equipping it is a reasonable recommendation for a tome-focused plan, but the evidence cannot quantify how frequently Frenzy will appear or calculate its total uptime across a run.

Does this Booster Pack Heroes frenzy tome upgrade guide verify v1.0.30D?

No. Its observations come from player experience in footage whose menu displays v1.0.27D, uploaded November 11, 2026. That establishes the evidence’s build context. If your upgrade descriptions or prices differ, use your current interface for the purchase decision; the supplied footage cannot resolve differences in a build it does not show.

Related guides

• Best Heroes & Upgrade Priorities
• Demon Slayer Boss Build & Triggers
• Duelist Unlock: Known Information