Advanced format ruling
Evil HERO Infernal Gainer
Card effect (current official text)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.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.