Evil HERO Infernal Gainer (SGX3-ENA07) [Speed Duel GX: Duelists of Shadows]

During your Main Phase 1: You can banish this card from the field, then target 1 Fiend monster you control; that target can make a second attack during each Battle Phase while you control it face-up. Once per turn, during your second Standby Phase after this card was banished to activate this effect: Special Summon this card in Attack Position.