Tarkir: Dragonstorm (!TDM) 

Enchantment - Saga 

 

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) // I, II - Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. // III - Whenever you cast a noncreature spell this turn, target creature you control gains double strike until end of turn. 

Clint Lockwood