The King's Dam

{t} Add {c}.
At the end of you turn, you may tap an Island
to put a Flood Counter on The King's Dam.
{t}, Remove all Flood Counters from King's
Dam: Add one mana for each counter removed,
of any combination of {g},{u}, and/or {r}.
When the floodgates are opened, the King's Dam
power is overwhelming.