Swivel+Gain 11 Block.
The next Attack you play costs 0.

Skill

2

Block: Until next turn, prevents damage.

Skill · Uncommon · The Watcher · Cost 2

Swivel

Gain 8 Block.
The next Attack you play costs 0.

Upgraded

Gain 11 Block.
The next Attack you play costs 0.

Swivel · Cards · Slay the Spire · SlaySpireDB