Boom Shroom
Boom Shroom is a cost 3 card in Plants on Fire. Rarity: Legendary.
- Attacks all enemies to deal 40%/40%/40%/80% damage. The Captain loses 4% of Max HP. Only the front-most enemy will be attacked if the Captain is below 4% HP.
In practice
Boom Shroom hits every enemy at once for 40% damage (80% at 4★) and costs your Commander 4% of max HP to do it. If the Commander is below 4%, only the front enemy is attacked. It fires when the fight starts, with 15 ATK and a 3.5 s interval. The builder tags it as early defense and Boss answer. One copy is enough. Tier C in PvP. It unlocks at 2800 trophies.
Base stats (1★)
Level progression
Permanent account progress: each level adds ATK and costs Gold plus card copies. Star rank (★) is separate and lasts only one match.
Increases damage to 48%/48%/48%/96%. 2000 Gold · 1 copies
Increases damage to 54%/54%/54%/108%. 4000 Gold · 2 copies
Reduces HP lost by the Captain to 3%. 7000 Gold · 4 copies
Increases damage to 66%/66%/66%/132%. 11000 Gold · 5 copies
Increases damage to 80%/80%/80%/160%. 16000 Gold · 6 copies
Sun cost to level up
1× · 3 sun
2× · 6 sun
4× · 12 sun
How star fusion works
2 copies at the same ★ merge into 1 copy at the next ★. 4★ only exists in Rumble Chess. In regular Co-op, your partner's Minions get a blue star and don't merge with yours.How it works
- Attack target: all enemies on the field (not the closest one).
- Triggers: when the fight starts.
- Who it affects: all enemies on the field.
Read from the game's official data. Numbers are for card level 1, for 1★/2★/3★ when three values are shown.
Card analysis
What this card does inside a deck, from the deck builder's data. It is the same reading the simulator uses to score decks.
Strengths
- Works as Early defense and Boss answer in a deck.
Weaknesses
- One copy is enough: a second one hurts or adds nothing.
- It sits in tier C for PvP, according to the community tier list.
Role in the deck
What it plays with
- Feeds Area damage and Captain HP loss to the engine.
Copies and merging
One copy is enough: a second one hurts or adds nothing.
Card data checked against game version 2.0.1021.0.
Rounds: when you can get it
Worked out from the official shop and Sun rules, for players in the 1000–1599 trophy range. It assumes you spend all your Sun on this card, which almost never happens in a real match.
- You can afford 1 copy(ies) (1★) by R1.
- You can afford 2 copy(ies) (2★) by R1.
- You can afford 4 copy(ies) (3★) by R2.
- Chance of showing up at least once in a 3-card shop: R1 97%, R2 96%, R3 95%, R4 94%, R5 93%, R6 91%.
Good against
Deck types I mark as good targets for this card. The reason comes from my research (in Portuguese or English).
- Summon Bodies: Multi-target against a swarm of weak units.
Works well with
Pairs the community and I find good together. The notes come from my own research and player guides (written in English).
Boom Shroom costs your own Commander HP on every attack, which increases Headless Jack's ATK bonus (which scales with missing HP).
Boom Shroom costs your own Commander HP on every attack and "needs healing", Greenkeeper heals the Commander every Ready.
Wiki deduction from the official text: One costs your Commander HP and the other gains from it (ATK per missing HP, damage when the Commander is hurt), or heals what the other spends.
Named by the site owner and checked against the official text: one card makes your Commander lose HP and the other gets stronger from it (ATK per missing HP, or damage to all enemies when the Commander takes damage).
What the community says
CSituational
Useful in one deck only: drains your Commander's HP so Headless Jack hits harder. Not the best shop purchase.
PvP opinion from when the tier list was made; use it as a reference, not as a game number. PvP tier list by NoControlTower (YouTube), 2026-04-02.
