Primordial Shadow Dragon

Deathtouch, Double Strike, Frist Strike, Flash, Flying, Haste, Indestructible, LifeLink, Menace, Reach, Trample, Vigilance, Proliferate, Undying, Phasing.

whenever a nonland permanent enters the battlefield you may pay {5} if you do place a dragon creature card from your deck or graveyard onto the battlefield.
{w}{u}{b}{r}{g} return target permanent from the graveyard to the battlefield.

Partner (You can have two commanders if both have partner)