Angelic Sleuth

Most Clue-generators key off combat: attacking, dealing damage, a creature dying in the red zone. This one asks for something narrower and more construction-heavy: a permanent with counters still on it leaving the battlefield. That specificity is the design logic. The condition names any other permanent you control, not just creatures, so it reaches beyond the usual creature-death payoffs to Sagas that hit the graveyard while a lore counter is present, counter-laden artifacts and enchantments blinked or destroyed mid-stack, and any +1/+1'd creature sacrificed while still holding its counters. The timing is the whole trick. What matters is the state of the permanent at the moment it leaves, not what you did with the counters earlier: a permanent that has been drained to zero triggers nothing when it finally departs, because the check finds no counters to see. That inverts the usual instinct. Most counter decks want to spend their stockpiles down for value; Angelic Sleuth rewards the opposite, keeping counters loaded so the permanent's exit banks a Clue on the way out. Each qualifying departure defers a card's worth of draw into an artifact you crack later, turning a board of counter-bearing permanents into a slow refuel engine rather than a burst. The flying body is incidental. The payoff lives on the exit side of counters, the less-explored half of counter design, and it asks a builder to think not about how counters accumulate but about the exact state a permanent is in when it dies.