Liyue Harbor

{t}: Add one mana of any color. Activate only as
long as Liyue Harbor is a land.
As long as Liyue Harbor is your active plane, creatures you control without an elemental
damage type have Geo. (The elemental damage
types are Anemo, Geo, Electro, Dendro, Hydro, Pyro,
Cryo. Creatures with Geo put a Geo element counter
onto creatures when they deal damage, then check for elemental reactions.)