Aspen, Natures Companion

+2: Tap an opponents creature. It stays tapped until your next turn
-3: Aspen, Natures Companion gains all loyalty abilities of all other Planeswalkers on the battlefield for one turn. He can go again.
-10: All green lands in your control become 5/3 green creatures with deathtouch and trample until end of turn. They are still lands.