This is one of the weirder decks in the world. Focused on the finer points of turning all of your opponents lands into islands, thereby rendering them useless to anybody who isn't mono-blue, the deck also tries to mess around with Boil and Boiling Seas, placing the player in a position with actual cards on board and then nuking all lands. Think of it like Armageddon, but Izzet coloured and more meme-y.
The main islandification package of the deck comprises of Spreading Seas, Sea's Claim and Quicksilver Fountain. The fountain is particularly notable among these both for hitting your own lands and being indefinitely repeatable, with the removal of the fountain not even being that helpful as it means all the counters on board are stuck there. This places foes such as Tron in a position where they can't play a land every turn because it just gets turned into an island before they can do anything valuable with it, but they can't not play a land because then they fall behind on tempo so far that they basically lose by default.
As you might guess, the main other gimmick of the red / blue list of the deck (opposed to the mono blue that goes full-on land-control) is the inclusion of Boil and Boiling Seas along with planeswalkers such as Saheeli Rai, Jace, the Mind Sculptor and Ral, Izzet Viceroy to continue existing after the Armageddon you can impose on the world. It's worth noting that the option to get three fountains off of Saheeli tends to cripple a lot of decks that rely on actually having a functional mana base out of the game instantly, while Jace and Ral kill for more obvious reasons.
As it may have also occurred to you, the deck might fall apart on encountering mono-blue. If this happens, just keep calm and remember that Boil effects hit them like a truck.
Just as a little note before the inevitable complaints that I have a terrible mana base. This deck attempts to play as few real islands (as in, lands that have the Island land type printed on them) as possible so that you can keep Quicksilver Fountain from resetting whenever possible. That's why the lands are a little odd and don't include four copies of the typically obligatory Steam Vents.
