Twisted Embrace

Removal stapled to an Aura is an old idea with an old problem: kill the enemy creature, staple the enchantment to one of your own, and if that creature ever leaves, the Aura goes with it, but the kill already resolved and stays resolved. The trick this design pulls is loosening the target restriction on both ends. It enchants an artifact or creature you control, so you are not forced to hang it on a body that might die in response; a Treasure token, an equipment carrier, any permanent that keeps it on the battlefield works. And the enters trigger can point at a creature or a planeswalker, giving you flexible removal that reaches either threat. The +1/+1 conditional does the polite work of turning the leftover Aura into a real buff when it sits on a creature and doing nothing when it sits on an artifact, so the card never becomes a dead permanent you regret keeping. What you are really buying at four mana is unconditional destruction of the opponent's best threat with a modest upside attached, structured so the fragility that usually plagues removal-on-a-stick is minimized by giving you a durable host to choose from.