Howl from Beyond - Slay the Spire 2
Deal 16 damage to ALL enemies. At the start of your turn, if this is in your Exhaust Pile, play it.
Howl from Beyond
+UPGRADEDDeal 21 damage to ALL enemies. At the start of your turn, if this is in your Exhaust Pile, play it.
Synergies & related cards

Can only be played if you have 3 or more cards in your Exhaust Pile. Deal 17 damage to ALL enemies.
Exhaust synergy — forms an efficient resource loop with Pact's End.

ALL enemies lose 6 Strength this turn. Exhaust .
Exhaust synergy — forms an efficient resource loop with Piercing Wail.

Innate . Deal 11 damage to ALL enemies. Exhaust .
Exhaust synergy — forms an efficient resource loop with Dramatic Entrance.

Gain Block equal to Poison on ALL enemies. Exhaust .
Exhaust synergy — forms an efficient resource loop with Mirage.