Eastcliff, City of Herbs

{t}: Add one mana of any color. Activate only
while Eastcliff, City of Herbs is a land.
While Eastcliff, City of Herbs is your active
plane, whenever a non-plane land enters the battlefield under your control, cure target
creature or player. (To cure a creature, remove a
-1/-1 counter or a virus counter from it. To cure a
player, remove a poison counter from a player.)