Vine Gecko

The first kicked spell you cast each turn costs {1} less to cast.
Whenever you cast a kicked spell, put a +1/+1 counter on Vine Gecko.

Island

Master Chef

Commander creatures you own have "This creature enters with an additional +1/+1 counter on it" and "Other creatures you control enter with an additional +1/+1 counter on them."

Forest

Simic Signet

Sol Ring

Arcane Signet

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

Verazol, the Split Current

Verazol, the Split Current enters with a +1/+1 counter on it for each mana spent to cast it.
Whenever you cast a kicked spell, you may remove two +1/+1 counters from Verazol. If you do, copy that spell. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)