If you like annoying your opponent but locking them out of the game completely with Blood Moon, Chalice of the Void, and Ensnaring Bridge is a bridge too far, this might be the perfect budget deck for you
It doesn't target, getting around opponents that have hexproof, and if you have four extra mana, it'll mill each opponent for half their library, rounded up
Migratory Greathorn ramps in the early game and serves as the best creature to start out a mutate stack
Its primary commander is Ghired, who can create 4/4 Rhino tokens, if you dont have a token on the battlefield already
Designer Notes: Command a relentless tide of Merfolk by casting blue spells to grow your aquatic army, then unleash Namor to deliver devastating commander damage