Court of Fontaine

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