Sarkhan, Vessel of Power

{t}:Put a 5/5 dragon token with flying onto the battlefield under your control
Whenever a dragon you control dies, deal damage to target creature or player equal to it's power
When Sarkhan, Vessel of Power die transform it
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Nico Bolas crumbled his mind until nothing was left, leaving him as an empty vessel free to be bent at Bolas's will