Marvem the Sunken Monument

When Marvem the Sunken Monument enters the battlefield you gain 2 flood counters.
On every turn at the beginning of your upkeep if
you control at least one blue angel you get 1 flood counter.
(This effect can only be activated while Marvem
the Sunken Monument is on the battlefield)
Put a flood counter on target land.That land is
an Island in addition to its other types as long as
it has a flood counter.