Deep Water Warroom

When Deep Water Warroom enters the battlefield, dive 3. (Look at the bottom three cards
of your library. Put any number of cards on top of
your library in any order, put the rest in your
graveyard.)
{u}{b}, {t}, discard a card: each opponent loses
1 life for each different card type in your
graveyard. Activate only if you dived this turn.