Cloaked Siren

Flash and flying together turn an ordinary 3/2 into a combat presence you never have to commit early: held up during the opponent's turn, dropped at their end step when nothing threatens it, or flashed in mid-combat to ambush an attacker. The math on the trade is the whole point. Against a small flyer it threatens a clean swap; against a larger attacker it forces an awkward choice between eating a creature in the block and pressing on into open mana. It rarely survives what it kills, but that is the bargain a three-power evasive body makes when it can arrive at any time. The real work happens before it even shows up: four mana left open reads as a counterspell or a removal spell the opponent cannot rule out, so they attack and spend more cautiously, and the Siren cashes in whichever opening that hesitation creates. This is the understated end of a long blue tradition of flash flyers, the line that runs from creatures that double as combat tricks rather than the splashy bombs: bodies that tax every alpha strike the opponent considers. The Siren type and the sea-witch flavor are window dressing; the design is a tempo tool that asks nothing of your sequencing except patience and the discipline to keep the mana in reserve, with the freedom to spend it elsewhere if the opening never comes.