Booster Pack Heroes Spells: Drops, Upgrades and Use
Quick answer
Spells in Booster Pack Heroes come out of the same booster packs as heroes: each pack has its own pool of heroes and spells, so the way to get more spells is to buy and open more packs, especially packs unlocked by beating chapter bosses. The full game launches on November 10, 2026, and the free Steam demo already lets you find and use spells, so a complete spell list is still forming.
| How spells are obtained | Each booster pack has its own pool of heroes and spells; chapter bosses unlock new packs with more spellsBooster Pack Heroes on Steam |
|---|---|
| How spells are upgraded | Survive to earn Mastery, then spend it to upgrade heroes and spellsBooster Pack Heroes on Steam |
| Release status | Launches Nov 10, 2026; a free demo is available nowOfficial Steam store page: Booster Pack Heroes |
Booster Pack Heroes spells explained: which spell cards drop from packs, how Mastery upgrades them, and what the demo currently shows about spell use.
Table of Contents
Spells in Booster Pack Heroes come out of the same booster packs as heroes: each pack has its own pool of heroes and spells, so the way to get more spells is to buy and open more packs, especially packs unlocked by beating chapter bosses. The full game launches on November 10, 2026, and the free Steam demo already lets you find and use spells, so a complete spell list is still forming.
How to get spells from packs
The developer describes the loop on the official Steam page: rip open booster packs, each with its own pool of heroes and spells, and defeat each chapter's boss to unlock new packs, heroes and spells. Packs are bought with the coins you accumulate between runs.
Defend the tower to earn Mastery and coins
Even a failed run pays out Mastery, the currency used for permanent upgrades.Buy packs before starting a chapter
Basic packs are cheapest; Advanced packs unlock after finishing chapter one, and a Magic pack appears in the demo's chapter three, each with stronger pools of heroes and spells.Open the packs on the field
Cards drop as units or spell books; overlapping packs can be opened at once, and upgrades can make packs arrive and open faster.Watch for spell books
Player footage of the demo shows spell books are a rarer drop than common units, but they are "quite powerful, especially against bosses".
Spells seen in the demo (player-reported)
The full list below comes from player demo footage, not an official spell index, so treat it as the demo-era set rather than the launch roster.
| Spell / book | What players report it does |
|---|---|
| Spell book (tome) | A rare pack drop that deals area damage over time, helping keep your units alive |
| Thunderstorm | An on-demand area spell; upgrades can extend its duration and add thunderbolt damage |
| Raise the Dead | A spell book that spawns skeletons, with upgrades like longer duration and skeletons doing more damage per hit |
Related upgrades seen in demo footage include "curses do more damage", longer storm duration, thunderbolt damage boosts, tome surge, and plague area-effect size. One player reports the fire mage hero (about a 9% pull in Advanced packs in their run) casts an AoE fireball with damage over time once upgraded.
How to use and upgrade spells
- Using a spell: when a spell card or book drops in a run, it activates from your side of the field; Thunderstorm-type spells are popped manually when a wave is about to overwhelm you, and players recommend saving them for boss fights.
- Upgrading spells: survive to earn Mastery, then spend it on the spell's upgrade nodes — the official page states Mastery is used to "upgrade your heroes and spells, unlock powerful new abilities".
- Unlocking more spells: beat each chapter's boss. In demo footage, finishing chapter one unlocks the Advanced pack and chapter two leads to the Magic pack, each carrying new heroes and spells.
- Foil versions: the September 2026 demo update added a chance to find foil versions of heroes and tomes, per the developer's launch announcement.
Next steps
- If you are chasing rare pulls in general, foil cards are the other rare outcome from packs worth hunting alongside spell tomes.
FAQ
What Booster Pack Heroes spells can I get right now?
In the free Steam demo, players have found the AoE-over-time spell book (tome), Thunderstorm, and the Raise the Dead book that spawns skeletons, plus hero spells like the fire mage's fireball. The full launch list is not published as of 2026-11-08; the game unlocks on Steam on Nov 10, 2026.
How do I get more spells?
Buy and open more booster packs — each pack type has its own pool of heroes and spells — and defeat chapter bosses to unlock Advanced and Magic packs with bigger pools.
How do I upgrade spells?
Earn Mastery by surviving waves, then spend it on spell-specific upgrades such as longer storm duration, stronger thunderbolt damage and bigger area effects.
Do spells cost anything during a run?
No purchase step is shown in demo footage; spells activate when their card drops from a pack, and the resource decisions (which packs to buy) happen before the round starts.
Check note: spell sources, Mastery upgrades and pack unlocks come from the official Steam page and the developer's announcements there (checked 2026-11-08); the specific spell names and drop rates come from player demo footage and remain unconfirmed by the developer.
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