okay so the main deck isnt really mine i cribbed it off of the mothership but this just looked like too much fun to pass up.
so the sideboard's goal is to Exile everything and  then make it impossible to draw cards, then use jeskai ascendancy combined with eye of the storm, dark ritual, isochron scepter with feed the clans on it, and hidden strings to create an arbitrarily large unblockable hydra omnivore with haste to destroy a multiplayer game in one fell swoop

its a casual deck alright so thats why theres 16 cards in the board instead of fifteen.