Banisher Priest

The Oblivion Ring effect, stapled to a 2/2 body. The lineage runs back to Faceless Butcher and through Fiend Hunter: take a removal effect that exiles a creature "until this leaves," then attach it to a creature so the answer can also attack and block. That bond between the exile and the host is the whole gamble. Kill the Priest and the creature comes home, which turns every piece of cheap removal into a two-for-one and every controlling deck into one that has to spend its answers twice. But the templating here is the quiet upgrade over its predecessors. Banisher Priest uses the modern single-duration "until this creature leaves the battlefield" wording, which sidesteps a notorious trap of the older family: if the Priest dies in response to its own enters-the-battlefield trigger, the target is simply never exiled at all, and nothing is stranded. There are no sacrifice-outlet shenanigans to permanently bury the creature, because the exile and the return are two halves of one effect rather than two separate triggers waiting to be exploited. The "an opponent controls" clause closes another loophole earlier designs left open, where you could exile your own creature to dodge effects or reset triggers. What remains is a clean piece of tempo: the creature you point at is gone only as long as the 2/2 survives, so the Priest blanks a blocker or attacker without ever being a permanent answer. It rewards a deck that can protect its own threats.