Brad's deck! Derevi's won an all-expenses paid, tropical island vacation and you're invited. You'll get to relax by the sea, bask in the warm sun, and meet all of Derevi's Merfolk friends. And there's a lot of them. Use Quicksilver Fountain to turn your opponents' lands into islands so nothing can stop your fishy army! [Harbinger of the Seas is played as a late-game Islandwalk enabler rather than an early-game stax piece]