Jubeel, Spellbane (DYN067) - Dynasty Rainbow Foil

Once per Turn Action -- {1 - Resource}: Attack
Whenever this hits a hero and you don't control a Spellbane Aegis, create a Spellbane Aegis token. (It's an aura with "If your hero would be dealt arcane damage, you may destroy this to prevent 1 of that damage.")