Demonic Counsel There are already some nasty demons for which you may have no need to use the delirium aspect of Demonic Counsel
Aftermath Analyst is a half-step behind the truly best-in-class ETB creatures in terms of cards milled, but its still cheap to cast and has the many advantages of creature cards: attacking, blocking, ease of recursion, and so on
What Mewtwo has instead are transformation states, and they are among the most powerful in the entire game
So other than the incarnations (Anger and Wonder) and the couple of spells what is good in this list, what are the payoffs for playing so many do nothing self mill gribblies and so few spells
While you can argue that MTG's most popular commanders are blue, and therefore run islands, you cant justify the chance of not getting to attack with the commander you spend your whole game trying to play if your opponent happens to not be on the right colors for you