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Magic

Firefly-shroom

Fusible: yes Since V2.7
A bioluminescent mushroom that illuminates dark tiles at night and fires tracking firefly sparks that home to the nearest zombie regardless of lane, dealing 25 damage per spark.
Plant Stats
Sun Cost
75 Sun
Damage
25
Attack Interval
2 Seconds
Range
Full Grid (Homing)
Target
Ground and Aerial Zombies
Toughness
500
Recharge
5 Seconds
Details
Fires homing firefly sparks every 2 seconds that track to the nearest zombie on the grid regardless of lane. In Night or Fog stages, passively illuminates a 3x3 area around its tile, functioning as a light source for mushroom plants requiring darkness. No Coffee Bean needed at night.
Firefly-shroom is a budget homing attacker that fires tracking firefly sparks to the nearest zombie anywhere on the grid. Unlike fixed-lane shooters, Firefly-shroom automatically prioritizes whichever zombie is closest to your plants, making it an intelligent defensive option in multi-lane scenarios. It also serves as a passive illumination source in Night and Fog stages. At 75 Sun, it is one of the cheapest homing plants available. In Adventure Night stages, plant multiple Firefly-shrooms in the center column to illuminate all lanes and maintain consistent homing fire across the grid. In Endless Mode, a cluster of six Firefly-shrooms combined with area plants creates a sustained grid-wide pressure system. The 500 toughness is low, so protect it with wall plants or position it behind other defenders.
Firefly-shroom is most effective in multi-lane scenarios where its homing mechanic automatically focuses on the highest-threat zombie rather than a fixed lane. In stages with scattered zombie spawns across all lanes, it consistently hits the most dangerous target without requiring manual targeting.
Strengths
Grid-wide homing auto-targets the nearest zombie intelligently
75 Sun cost is among the lowest for a homing attacker
Natural illumination in Night and Fog stages with no Coffee Bean needed
2-second attack interval is fast for the cost
Stacks well with other mushroom plants in night-stage builds
Weaknesses
25 damage per spark is low and cannot solo tough zombies
500 toughness is very low and requires defensive backup
Homing mechanic may not always target the strategically optimal zombie
Requires Coffee Bean in daytime non-mushroom stages
Cannot illuminate as effectively as Plantern in very dark stage types
1 Cluster four to six Firefly-shrooms in the center column for grid-wide homing coverage
2 In Night stages, use them as combined attacker and light source to free your Plantern slot
3 Pair with Gloom-shroom for layered area and homing damage in the same mushroom build
4 Protect with Wall-nut since 500 toughness is vulnerable to zombie contact
5 In Endless Mode, replace individual lane shooters with Firefly-shrooms when zombie spread becomes unpredictable
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