Stoneforge Mystic [Worldwake] Pioneer that creature's controller sacrifices it

that creature's controller sacrifices it

If Cosmic Horror is destroyed this way

Monkey Monkey Monkey gets +1/+1 for each nonland permanent whose name begins with the chosen letter

Set: Ravnica: City of Guilds Type: Land — Island Swamp Rarity: Rare ({T}: Add {U} or {B}

If any creatures with banding you control are blocking or being blocked by a creature

Stoneforge Mystic [Worldwake] Pioneer that creature's controller sacrifices itSet: Worldwake Type: Creature Kor Artificer Rarity: Rare Cost: {1}{W} When Stoneforge Mystic enters the battlefield, you may search your library for an Equipment card, reveal it, put it into your hand, then shuffle. {1}{W}, {T}: You may put an Equipment card from your hand onto the battlefield.