Kirtar's Desire

Pacifism with a switch wired to your own graveyard. The base mode is the familiar one-mana neutralizer: spend a card to clamp down a single attacker, the trade every aura of this kind makes when you point it at an opponent's board. But Pacifism and its descendants lock a creature on both ends, attack and block alike. This one is deliberately weaker out of the gate (the enchanted creature can still throw itself in front of your attackers) and only hardens into a full lock once you cross threshold. That condition does the real work: it asks you to earn the upgrade by stocking your yard, which means the cost is essentially zero in a self-mill or spell-dense shell already doing that work for other reasons. The wrinkle is that the condition here is a live, reversible state rather than a permanent flip. Any effect that exiles your graveyard or otherwise pulls you back under seven turns the blocker back on, so the durability of the lock tracks your graveyard count turn to turn. It is a tidy snapshot of an early-era bargain: a playable answer on turn one that quietly sharpens as the game piles fuel into the yard, with the threshold clause banking value you would otherwise let lie spent.