Mightstone's Animation

Turning inert artifacts into attackers is one of blue's oldest tricks, and the tax on that trick has always been card disadvantage: the Aura archetype's structural weakness is that enchanting a permanent invites a two-for-one, since removal aimed at the target eats your Aura along with it. Baking a cantrip into the enter trigger softens the down side. Once this has resolved, a removal spell pointed at the enchanted artifact costs you the Aura and the body but not raw card count, because you already replaced the Aura on the way down. The protection has a hard limit worth naming: it is an enter trigger, not a cast trigger, so if the artifact is destroyed in response to the Aura going on the stack, the spell has no legal target, fizzles, and never draws you the card. The refund only exists once the Aura has actually stuck. The 4/4 base power and toughness overwrites whatever the artifact was, which quietly matters: because the effect sets a base rather than granting a bonus, it works cleanly on a mana rock or an equipment that had no power or toughness to begin with, turning it into a real clock. This is built for decks already committed to artifacts, where the target was going to be on the battlefield regardless and the animation reads as upside rather than a fragile commitment.