Naofumi,Tactful Hero

0: All Non-Defender creatures gain +1/+0. All Defenders gain +0/+2.
+2: Search your deck for a basic land card that is not a Plain or Mountain and play it tapped. Summon a 0/2 Shield Token Artifact.
-12: All creatures gain +5/+5 and gain Trample. All Defenders may attack and gain vigilance.