Tides of War

At the beginning of your upkeep, put a flood counter on Tides of War. Then if there are three or more flood counters on it, remove all of them. If you do, all lands lose all abilities and becomes basic Islands until end of turn and all blue creatures you control get +2/+2 until end of turn.
Whenever a blue creature you control blocks, you may pay {u}. If you do, that creature gets +0/+1 until end of turn for each flood counter on Tides of War.