Try Everything 25/204 (Shimmering Skies)

(A character with cost 4 or more can [Exert] to sing this song for free.) Remove up to 3 damage from chosen character and ready them. They can't quest or challenge for the rest of this turn.

NM - $0.10
LP - $0.10
MP - $0.10
HP - $0.10
DMG - $0.10