Chandra, Blazing Heart

+1: Exile the top 3 cards from your library. You may play them. If you don't, they each get 1 Blaze counter, then add 1 mana of any color for each.
-7: Until the end of the turn, you may play cards from exile that have Blaze counters without paying their mana costs.
: Chandra, Blazing Heart can be your commander. Partner with Nissa, Heartshaper