Echoing Boon
The hidden-agenda mechanic was built for bluffing: you commit to a secret card name and weaponize the opponent's uncertainty until you flip the conspiracy face up. This one inverts the premise. The name you choose is one of your own creatures, so the secrecy buys nothing strategic; the moment you reveal it, you are simply confirming what you intended all along. The payoff is the part that matters. Whenever you cast an instant or sorcery that targets the named creature, you may copy that spell and redirect the copy elsewhere. The named creature is not the beneficiary so much as the ignition key: it satisfies the trigger condition, then the doubled spell can point anywhere it likes. That turns a buff into two buffs, a targeted cantrip into a double draw, a redirect-style answer into two answers. Structurally it is a build-around that costs nothing on board and asks nothing during play except that you arrive having already decided which creature is worth naming, a piece of deck-construction signal smuggled in before the game even starts. The honesty of it shapes how it plays: you commit early, you commit publicly the instant you flip it, and the reward accrues only if you keep aiming spells at the same target turn after turn. It rewards repetition and a protected anchor creature, not the single explosive reveal the mechanic was originally designed to stage.
