Ring of Destruction (Japanese Artwork) (KC01-EN055) - 25th Anniversary Ultimate Kaiba Set Unlimited Condition:Lightly Played If the discarded card is

If the discarded card is a Fire Energy card

Resistance Darkness -20

Colorless Fastwave (40) This attack's damage isn't affected by Resistance

you can have up to 8 Pokémon on your Bench and you can't put non-Darkness Pokémon into play

Ring of Destruction (Japanese Artwork) (KC01-EN055) - 25th Anniversary Ultimate Kaiba Set Unlimited Condition:Lightly Played If the discarded card isTypenull Normal Trap AttributeTRAP Card TextDuring your opponent's turn: Target 1 face up monster your opponent controls whose ATK is less than or equal to their LP; destroy that face up monster, and if you do, take damage equal to its original ATK, then inflict damage to your opponent, equal to the damage you took. You can only activate 1 "Ring of Destruction" per turn.