Skulduggery

Instant • Mana cost: {B} • Outlaws of Thunder Junction • Common

Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1.

"Why you yellow-bellied, loot-stealing, good-for-nothing, bottom-feeding, dog-faced, lily-livered..."

Illustrated by Miro Petrov.