Kamahl, Heart of Krosa {6}{G}{G}
Legendary Creature — Human Druid
GreenCommander: legal
Identity
Green
EDHREC rank
#5,288
Cheapest printing
US$3.46
TCGplayer
Printings
2
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.)
Keywords: partner
Every printing
highest TCGplayer market first; a card with only a thin single listing shows its low
In short
A Commander deck is a commander and 99 other cards, one copy of each (except basic lands), all inside the commander's colour identity. Paste a full list into the deck price calculator to price it and check it against the format.