Xalvath, Reaper of Souls

-3: Xalvath deals 3 damage to an opposing creature. If he kills it, it gains a number of loyalty counters equal to the mana cost of the slain card
-4: Xalvath, Reaper of Souls becomes a 5/5 legendary creature with flying and indestructible
-6: you get the emblem "whenever a non-token creature dies you create a 1/1 spirit token with flying"