Elspeth, Legion's Support

+2: Whenever a creature you control attacks this turn, it gets +1/+1 until end of turn and you gain 1 life.
+1: Create a 1/1 red and white Soldier token. If three or more creatures attacked this turn, that token gains double strike.
-9: Creatures you control get +2/+1 and gain double strike, vigilance, lifelink and flying until end of turn.