Irias, Awakened Ocean

: Irias, Awakened Ocean can be your commander. Whenever you tap an Island for mana, add {u}.
+2: Look at the top three cards of your library. Put one into your hand and the rest on the bottom of your library. Untap target Island you control.
-7: Lands you control become creatures and have +X/+X until end of turn, where X is the number of islands you control.