[+1]: Put three 1/1 white Soldier creature tokens onto the battlefield.
[-3]: Destroy all creatures with power 4 or greater.
[-7]: You get an emblem with "Creatures you control get +2/+2 and have flying."
This planeswalker dominated her time in Standard. Since she rotated she has popped up from time to time in various Modern decks and still sees quite a bit of play in Commander and Cube. The fact the she can wipe out big creatures and make an army of little ones means she is both a threat and an answer that outclasses most other cards in the game.