Sandstorm Eidolon

The recursion clause is the entire reason this Spirit exists, and it is tuned to a deck whose spells are gold by default. The two abilities work in sequence rather than against each other: sacrifice the creature to force a blocker out of the way, and now it sits in exactly the zone the return trigger needs it to be in. Cast a multicolored spell the next turn and the Eidolon comes home, ready to throw itself in front of damage again. Most Falter effects, the kind that strip a creature's ability to block for a turn, live on a spell you cast once and discard; here the same effect rides a body that recurs, so spending it to push through one attack costs almost nothing when the gold spells keep flowing. The sacrifice is the setup for the recursion, not a competing impulse. Strip away the multicolor commitment and the engine never turns over: you are left with a 2/2 whose lone trick fires once and then stays buried with nothing to call it back. Lean into gold cards and the same Spirit becomes a self-replenishing blocker-clearer, returning as fast as you cast the spells you wanted to cast anyway. It is a payoff card in the strictest sense, scaling with how hard you commit to the multicolor plan and going inert the moment you do not.