The Celestant Prime

Flash, flying, vigilance
The Celestant Prime enters the battlefield with
two +1/+1 counters on it for each time you've
cast your commander from the command zone
this game.
Hurl Ghal Maraz - Boast - {1}{w}{u}{r}: Tap target
nonlegendary creature with lesser power and gain
control of it. It becomes a Stormcast Eternal in
addition to its other types.