Uktabi Drake
Green flyers are a deliberate rarity, a color-pie line Wizards crosses only when there is a reason, and this is the version that exists because of a color-shifting experiment: a creature whose flying-haste body would read as red or white anywhere else, slotted into green to ask what an off-color aggressor in the color pie looks like. The rate is aggressive on purpose. A one-mana 2/1 with evasion and haste swings for two the turn it lands, which is the kind of clock green almost never gets to set. Echo is what pays for it. One green mana puts the body on the battlefield, but the upkeep tax means the full commitment is four mana spread across two turns, and that second payment lands at the moment your opponent has had a full turn to find an answer. The structure rewards the tempo player who would rather take the early damage and walk away than the value player who wants to keep it: a 2/1 that has already connected once is rarely worth three more mana to retain, so the honest play is often to let echo resolve as a sacrifice and treat the card as a one-mana hasty flyer with a built-in expiration. That is the wrinkle the design leans on, and it is the reason a flying-haste two-power one-drop in green never broke anything.

