Skarrg Guildmage 
Creature — Human Shaman
: Creatures you control gain trample until end of turn.
: Target land you control becomes a 4/4 Elemental creature until end of turn. It's still a land.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL