Kodama's Reach

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Avacyn's Pilgrim

Birds of Paradise

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Circle of Dreams Druid

{T}: Add {G} for each creature you control.

Elvish Mystic

Cadira, Caller of the Small

Trample
Whenever Cadira, Caller of the Small deals combat damage to a player, for each token you control, create a 1/1 white Rabbit creature token.

Llanowar Elves

Sol Ring

Three Visits

Search your library for a Forest card, put it onto the battlefield, then shuffle.

Fyndhorn Elves

Jaheira, Friend of the Forest

Tokens you control have "{T}: Add {G}."
Choose a Background (You can have a Background as a second commander.)

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.

Harvest Season

Search your library for up to X basic land cards, where X is the number of tapped creatures you control, put those cards onto the battlefield tapped, then shuffle.