Archaon the Everchosen

Trample, Ward {3}, Undying 2, Vigilance
When Archaon enters the battlefield or attacks,
put a +1/+1 counter on all creatures you control
that attacked this turn. Chaos spells you cast cost {2} less to cast, and Chaos Warriors you control
have Vigilance.
If Archaon has at least 10 power, it gains Indestructible and Annihilator 3.