Stormweavers Aegis [PEN239] (Compendium of Rathe)

Instant Destroy this: Until end of turn, instant cards you own get "Instant Discard this: Prevent the next 2 damage that would be dealt to you this turn."

Arcane Barrier 1 (If you would be dealt arcane damage, you may pay [1 - Resource] to prevent 1 of that damage.)