The Queen of Chaos

Deathtouch, Vigilance, Partner
Whenever The Queen of Chaos enters the battlefield, you may sacrifice any number of creatures.
The Queen of Chaos enters with +1+1 counters
equal to the total power of sacrificed creatures.
Then deal X plus 3 damage to any number of targets, where X is the number of +1/+1
counters on The Queen of Chaos. At the
beginning of each combat, Amass 3.