While it benefits from the massive statline creep typical of modern creatures, having to give up both the payoff trigger and its evasion after the first activation keeps it from being any higher on this list
Now with Spell Queller and Thalia, Heretic Cathar, there are a multitude of scenarios that can be manipulated
Black doesnt have mana acceleration and land fetching, but Armillary Sphere and Solemn Simulacrum do
This commander also has a low casting cost, making it easier to keep on the field and benefit from its static ability
If you can be trusted with Archaeomancer, its a classic for a reason, but one Ive stopped running in order to remove myself from the temptation to soft lock the table
While that stipulation will likely exclude it from mainstream play, it could be very fun to try out in robot/alien themed decks