Elspeth, Storm Slayer - Tarkir: Dragonstorm

If one or more tokens would be created under your control, twice that many of those tokens are created instead.
[+1]: Create a 1/1 white Soldier creature token.
[0]: Put a +1/+1 counter on each creature you control. Those creatures gain flying until your next turn.
[-3]: Destroy target creature an opponent controls with mana value 3 or greater.