one piece trading card game op05 OP05-069 SR Super Parallel Challenge your friends or card collectors in exciting strategic duels OP05-119] Monkey.D.Luffy SEC/P〈Parallel〉＜PRB01＞

So long as you have black mana to spend, Crypt Rats can wipe the board of anything as well as deal burn damage to your opponents

This is especially true once you move beyond mono-color decks and start exploring other strategies and formats where multicolored mana bases get more ambitious

TYPE Enchantment ABILITY Whenever a creature you control dies, each other player sacrifices a creature of their choice

so more generally, are creatures considered attacking immediately when they are declared attackers, do their triggers need to resolve first (step change), or something else

It's attack trigger to pump it for your Goblin count so it's a faster Commander Damage kill than you would expect normally