Wailord

Rain Dance

When it begins raining while Wailord is on the field or
when Wailord enters the battlefield & it is raining, return
all creatures with {x} or less toughness to their hands.
Where {x} is equal to the number of islands you control.

Wailord can't be blocked by creatures with 5 or less power.

If Wailord is your commander, you may choose an
additional color for your deck.