You have the ability to guard your allies from area-of-effect moves. As a reaction, when a creature activates a damaging move that damages multiple allies within range, you may halve the damage dealt. On future instances of this reaction in the same combat, you must roll higher than a 15 on a d20 roll or forfeit the reaction with no effect

You have the ability to guard your allies from area-of-effect moves. As a reaction, when a creature activates a damaging move that damages multiple allies within range, you may halve the damage dealt. On future instances of this reaction in the same combat, you must roll higher than a 15 on a d20 roll or forfeit the reaction with no effect