3-color 3CC powerful planeswalkers.

For instance, Bant Planeswalker: UWG
+1: twiddle
+1: remove target permanent from the game, return it into play under it's owner's control at the next upkeep.
+1: each player may search its library for a basic land card and put it into play. Each player who searched this way, shuffles it library.
-X: draw X cards, gain X life and put X +1/+1 counters on target creature.
Loyalty: 2
Probably too strong as it is. But anyway, you see the point.