Dragon Mantle

The cantrip clause is the entire pitch, and it solves a specific Aura problem rather than the one the design might appear to address. Auras have always carried a structural risk that kept whole categories of them out of serious play: spend a card and the mana to enchant something, watch it die later, and lose both halves of the trade for nothing. Drawing a card on entry does not protect against an opponent killing the creature in response to the Aura spell (that fizzles it entirely, target gone, no trigger, both cards wasted). What it protects against is everything after resolution. Once the Aura sticks and the card has been replaced, you are card-neutral regardless of how long the enchanted creature lives, which means a removal spell next turn no longer two-for-ones you. That is the worst-case Aura sequence defanged, and it is the reason this can run in decks that would never otherwise touch the card type. The firebreathing it leaves behind is the minor half: a repeatable pump that scales with available red, good for pushing the last points through a clogged board, never the reason to cast it. The design sits in a small lineage of pump auras that pay back the card they cost. Rancor solved the tension by returning itself from the graveyard; this one solves it by replacing itself the moment it arrives.