Burdened Aerialist

Here the Treasure is not just ramp: it's the trigger. The body enters and hands you an artifact, and the second ability turns any sacrifice of a token into evasion, so the same Treasure that fixes your mana or fuels a spell also pays for a swing over the top of the ground. That coupling is the whole design idea. On its own the card is a fragile 3/1 whose flying lasts only as long as you keep sacrificing tokens, but any deck already sacrificing tokens for other reasons (an aristocrats engine, an artifact-matters shell, a spellslinger deck cashing in Clues or Treasures) gets the flying rider for free on lines it was going to make anyway. Note the ability keys off sacrificing tokens broadly, not Treasures specifically, so Clues, Blood, Food, and creature tokens from a sacrifice outlet all switch on the evasion. The tension the card resolves is a familiar one for blue beaters: how do you make an evasive threat that isn't priced like an evasive threat? The answer is to make the evasion conditional on a resource you're spending elsewhere, so the flying is a reward for engine activity rather than a static keyword you paid for up front. It rewards a board built to sacrifice, and does nothing for a deck that isn't.