While you don't have precise control over those options there are still different 8 possibilities of which you do have some control and, most critically, none of which are bad
Sacrifice Trivia Contest and open an Attraction
For such an epic event, we're offering some equally epic prizes
However, in practice, it means that if you draw an extra card in your mainphase, say you play Reach Through Mists, you discard a card from your hand first and then resolve the draw
Yes, there's people crazy enough to fill out an entire deck with Krakens, Leviathans, Octopuses, and Serpents, slapping a commander like Thassa, God of the Sea, Slinn Voda, the Rising Deep, or (my favorite!) Arixmethes, Slumbering Isle, and then smashing face with giant sea monsters