First up is The Scarab God, which is a five mana Blue and Black God that basically drains your opponent to death the more Zombies you have out every time you have an upkeep
You're like 75% in on morph, but you've also got some extraneous cards you don't really need to be using, like Ophidian(You're in blue-you'll get better payoff just using a draw spell or something that taps to draw) AwesomeName on Go Go Morphing Wizards 10 years ago Quicksilver Dragon, Dermoplasm, Voidmage Apprentice, Counterspell, Thousand Winds, Caged Sun, Rite of Replication ,Rhystic Study, Patron Wizard, Sigil Tracer, Vesuvan Shapeshifter, Stratus Dancer, Arcanis the Omnipotent, Capsize, Brainstorm, Fact or Fiction, Pongify, Mind Stone, Diviner's Wand, Riptide Laboratory, Coral Atoll, Nykthos, Shrine to Nyx, Halimar Depths are some that might be worth considering.
Faldorn and Averna both have great cascade synergy, and Maelstrom Wanderer is just a fantastic EDH card in general
Heres another card where I dont think the original set premium is high enough
