Ghostly Possession

Because the damage prevention runs both ways, this reads less like a buff and more like a cage. Slap it on an opposing threat and the creature can no longer deal or take combat damage: it cannot trade, cannot punch through, and cannot be punched out of the way. The flying clause is where the design turns awkward, because granting evasion to a creature you do not control rebounds against you. A defanged flier still blocks, and now it blocks your fliers as an invincible wall, intercepting the very attackers an aura like this is supposed to clear out of the way. That is the cost of pacifying rather than killing. Because it never touches the body, the enchanted creature still counts toward devotion, still feeds convoke, still sits on the battlefield as a permanent. This is a softer Pacifism with a different texture: where Pacifism simply forbids attacking and blocking, this leaves the body able to wall while neutering any retaliation against it. The other catch is structural to every aura built this way. Tie up a threat with it and a single bounce or sacrifice effect refunds the opponent and strands your card, so the lock holds only as long as the creature stays put. White has printed this kind of "your threat is now inert" answer for a long time, dealing with a creature without removing it and accepting that the answer can be unwound the moment the opponent finds the seam.