Chandra, Emrakul's Flame

+1: Create 1 {r} for each instant or sorcery you cast this turn.
-2: Create a 3/1 Eldrazi Horror Elemental for each two instants or sorceries you cast this turn.
-6: Four creatures you control get +X/+0 and trample until end of turn, where X is the number of instants and sorceries in your graveyard