Kamahl, Heart of Krosa is a mythic Legendary Creature — Human Druid card from Commander Legends (CMR), collector number 581.
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.)