- Every 3 seconds, unit hurls a magma ball that deals 480 damage to enemies in a 10m radius around its target, up to 720 in total. Knocks back small and medium units.
- Power: 100
- Activate to trigger a groundshaking quake that deals 850 damage to enemies every 2 seconds for 6 seconds. Knocks back small, medium and large units. Reusable every 30 seconds
- When being spawned unit knocks back small, medium and large units dealing additionally 500 damage to enemy units in target area, up to 2000 in total. Affects ground targets only.
- While moving around unit takes 50% less damage and knocks back small and medium units dealing additionally 250 damage to enemy units in target area, up to 1000 in total. Affects ground targets only.
|Fire Worm I||Fire||King of the Giants||Standard|||
|Fire Worm II||Fire||The Insane God||Advanced|||
|Fire Worm III||Fire||The Insane God||Expert|||
|Card Upgrade||Type or Ability||Effect|
|Fire Worm I||Lifepoints||+100|
|Fire Worm I||Earthquake*||+50 damage|
|Fire Worm II||Lifepoints||+200|
|Fire Worm II||Earthquake**||+100 damage|
|Fire Worm III||Lifepoints||+240|
|Fire Worm III||Earthquake***||+100 damage|
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