Gideon of the Blackblade

+1: Create a 1/1 white Human Soldier token with vigilance.
0: Gideon becomes a X/X Human Soldier with indestructible until end of turn, where X is the number of lands you control. He's still a planeswalker.
-X: Exile all other nonland permanents with converted mana cost X. For each planeswalker exiled this way, put a loyalty counter on Gideon