Mu Yanling, Sky Dancer

Everything in this planeswalker's kit points the same direction: keeping attackers off you and putting a clock in the air. The plus does not remove a threat so much as neutralize it, shaving power and stripping flying until your next turn, which is enough to blank an evasive attacker or let your own ground creatures trade up while loyalty climbs. The minus-three is what the plus is protecting toward: a 4/4 flyer is a genuine body, above the curve for the cost and immediately relevant on both sides of the board, though spending it drops her low enough that she needs that fresh Bird (or another plus) to survive the crackback. That tension between building loyalty and cashing it out for a token is the whole strategic axis here, a planeswalker that wants to be defended by the very creatures it makes. The ultimate turns every Island into a repeatable card-draw engine, an emblem that outlasts her and rewards the mono-blue manabase her cheap cost already encourages. This is a compact tempo package rather than a value engine: cheap enough to land ahead, with a plus that protects and a minus that closes, asking little beyond an aggressive blue posture around it.