Lochlynn, the Stormcaller

At the beginning of combat on your turn,
creatures you control get +3/+3 and gain trample
until end of turn.
{1}{g}: Until end of turn, target land you control
becomes a 1/1 Elemental creature with vigilance, indestructible, and haste. It's still a land.
Partner with Taochda, Thunder Stag