Howl from Beyond (Retro) [30th Anniversary Edition] Commander 2018 but woe awaits whomever finds

but woe awaits whomever finds out who stokes the fire or what simmers in the pot

Set: Summer Magic / Edgar Type: Sorcery Rarity: Common Cost: {B} Return target creature card from your graveyard to your hand

Set: Secret Lair Drop Promos Type: Legendary Planeswalker — Karn Rarity: Rare Cost: {4} Activated abilities of artifacts your opponents control can't be activated

if that spell's mana cost or that ability's activation cost contains {X}

Howl from Beyond (Retro) [30th Anniversary Edition] Commander 2018 but woe awaits whomever findsSet: 30th Anniversary Edition Type: Instant Rarity: Common Cost: {X}{B} Target creature gets +X +0 until end of turn.