Crimestopper Sprite

Tempo with an escalation clause built into the additional cost. The base mode is a flying body that taps a creature on the way in: a plain tap effect with wings, good for clearing a blocker before combat or blunting an incoming swing. What collect evidence adds is a question about how much your graveyard is worth. Exile six mana value of dead cards and the tap upgrades to a stun counter, which is functionally a two-turn lockdown: the creature stays tapped through its controller's next untap step before it can wake, since the counter is spent instead of the untap. That converts a one-shot tempo trigger into hard, if temporary, removal of a key attacker or blocker. The tension is resource-based rather than positional: the tap fires regardless, but the stun demands that your graveyard has already grown heavy enough to feed it, so the card scales with the length of the game instead of fighting against it. Early it is a modest flyer with a nudge; later that same enters-the-battlefield trigger buys a full turn cycle of downtime, paid for with cards you were done using. The design leans on stun counters to fake vigilance-denial and pseudo-removal in blue without ever destroying anything, keeping the color inside its lane while still letting it hold a threat down for a rotation of untap steps.