Eluge, the Shoreless Sea

Eluge's power and toughness are each equal to the
number of Islands you control.

Whenever Eluge enters or attacks, put a flood
counter on target land. It's an Island in addition
to its other types for as long as it has a flood counter.

The first instant or sorcery spell you cast each turn
costs {u} (or {1}) less to cast for each land you
control with a flood counter on it