Ezzmerraldaa, Daemonic Warlord

Hexproof, Doublestrike and Portalwalk
Whenever Ezzmerraldaa takes damage, gain that much life and place that many +1/+1 counters on him
If a red spell was cast this turn Ezzmerraldaa gains Annihilator X
X is the spell's converted mana cost
If Ezzmerraldaa would die, transform him instead