Sam, the Rumbling Madness

+1: Target land becomes a 3/3 creature with Menace until the end of turn. It is still a land.
-2: Discard a card with madness, don't pay its madness cost to play it.
-8: All lands become 4/4 creatures with Trample. If a land is already a creature, it gets +4/+4 and trample.