Karakyk Guardian
Most protection gates on a condition you have to maintain; this one gates on a condition you're racing to lose. The hexproof holds only until the Dragon connects, which inverts the usual protection calculus: the shield is up exactly when the creature first resolves and is most exposed to a spot-removal answer, and it drops the instant the body does its job. That is a self-solving design problem. A 6/5 with flying, vigilance, and trample would ordinarily demand an immediate removal response, so pinning hexproof to the pre-damage window buys the controller one clean swing without letting the protection sit forever. Note that this is hexproof, not shroud: the controller can still target their own Dragon (to buff or protect it) while opponents are locked out, which matters more than the drawback frame suggests. Vigilance is the keyword doing the quiet work here, because the Dragon can attack, lose its hexproof on damage, and still be untapped to block, so opponents get their targeting window on the controller's terms rather than during a tapped-out lull. The three-color cost is the price of stacking evasion, a combat-neutral attack pattern, and conditional protection onto one body; the payoff is a threat the opponent has to solve after it has already extracted value, not before. It punishes the reflexive answer and rewards holding removal for the window the card hands you.
