Tidal Bane

Flying, hexproof, islandwalk
Whenever a player activates and/or copies a
nonland permanent's ability, you may put a flood
counter on target land they control. (Lands with
flood counters on them are Islands.)
{x}{x}, {t}: Target player copies target activated
ability of a nonland permanent with a mana value
of X or less. This ability can't be countered.