Sigardian Priest

The tap-down effect is older than this kind of priced, repeatable lockdown, but the clause that defines this one reads as flavor and behaves as faction warfare: the target must be a non-Human creature. In a setting where the monstrous and the inhuman were the threat, that restriction turns a generic tapper into a tribal tool, a Cleric who refuses to lift a hand against her own kind. Mechanically the limit cuts in one direction only: she does nothing against opposing Humans, and she cannot point at herself either. What the cost buys is a mana-gated soft lock on a single attacker or blocker each turn, holding down something larger than a 1/2 could ever fight in combat, then repeating the tax on that same creature the turn after. Since the ability only taps, its use against your own board is marginal (tapping an ally to dodge a symmetric effect, or to enable a mechanic that cares about tapped creatures), but the design is plainly built to point across the table. The 1/2 body is built to survive rather than trade, which is the point: the value lives in the activation, not the combat math, so she wants to sit back and keep taxing. It is a design that hangs entirely on its targeting restriction, a removal-adjacent effect priced cheaply precisely because it can only ever point at half the board.