Jeskai Infiltrator

The unblockable clause is the entire engine, and it points inward: this can't be blocked only while it stands alone, so the deck that wants the trigger is the deck that runs almost nothing else on the battlefield. Connect once and the payoff is a two-card manifest, but the way it pays out is the genuinely strange part. Rather than just stealing a card and turning it face down, the ability exiles both this creature and your top card into a shuffled pile, then manifests them blind. You lose track of which face-down 2/2 is the Monk you started with and which is the fresh card off the top, so an opponent who wants to kill the "real" threat has to guess. That randomized pile is what makes manifest more than a vanilla token here: it converts a single connection into a small information game where the opponent is left reading two anonymous bodies. The design rewards a lonely board and punishes overcommitting, which puts it at odds with most go-wide strategies and squarely in the lane of solitary tempo creatures that ask to be left alone long enough to land a hit.