Haunt

Osty's attacks deal 4 additional damage.

At the start of your turn, add 1 random card into your Hand. It gains Ethereal.

At the start of your turn, apply 6 Doom to a random enemy.

Whenever you play a card that costs 2 Energy or more, gain 4 Block.

Flood the deck with Souls and convert them into free draw, passive damage, and explosive payoff attacks.