Kalia, Extorting Warlock

Flying
At the beginning of each opponent's upkeep,
that player may pay {2}. If they don't, put a flood counter of target land that player controls. That
land is an Island in addition to its other types for
as long as it has a flood counter on it.
Whenever an opponent taps a land with a flood counter on it for mana, create a Treasure token
and draw a card.