Goka, the Pyre of Malice (SDOK-EN006) [Structure Deck: Onslaught of the Fire Kings]

If you control a FIRE monster, you can Special Summon this card (from your hand). When you do: Target 1 FIRE monster you control; destroy that target. During each of your Standby Phases: Special Summon 1 "Fireball Token" (Pyro-Type/FIRE/Level 1/ATK 100/DEF 100) in Defense Position. You can Tribute 1 other FIRE monster; this card gains 500 ATK, until the End Phase.