Urza Planeswalker

0: Put loyalty counters on Urza PLaneswalker equal to the number of permanents you control that share a color with him.
-X: Return X artifacts from a graveyard to the battlefield under your control. Then Urza Planeswalker deals X damage to target creature or player.
-20: Gain control of and untap all creatures that share a color with a planeswalker you control. They gain indestructible and haste until end of turn.