Quicksilver Dragon

Redirection is the rare protective ability that costs the opponent nothing to ignore and everything to fight. The activated effect only fires when a single-target spell is pointed at this Dragon, and for one blue mana it reroutes that targeting onto a different creature: a Murder, a burn spell, a Pacifism, all sent to whatever else is on the board. That narrowness is the discipline. It does nothing against sweepers, nothing against edicts, nothing against a spell that already has multiple targets, so the design never threatens to make the Dragon untouchable; it only taxes the obvious one-for-one answer, and it taxes it on the opponent's clock. The face-down disguise supplies the other half of the threat. A 2/2 morph hides a 5/5 flier, and the moment an opponent commits removal to the unknown body, unmorphing plus a single blue mana can leave their spell stranded on something they never meant to kill. Morph was always a wager on imperfect information, where guessing wrong burns a spell, and this card collects on the guess directly: the redirect punishes whoever finally decides the unknown threat is worth answering. A control finisher that protects itself by turning the opponent's own removal into a misfire, rather than by being hard to target in the first place.