Elspeth, Storm Slayer Finish:Nonfoil you may cast those cards

you may cast those cards without paying their mana costs

Creatures you control can attack as though they didn't have defender

+2: You gain 3 life and draw a card

Sarkhan becomes a Dragon in addition to its other types and gains flying

Whenever you cast a colorless spell

Elspeth, Storm Slayer Finish:Nonfoil you may cast those cardsIf 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.