Link, The Hero of Hyrule

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 (You can have two commanders if both have partner.)