Optimus Prime, Hero can even be cast transformed if players wish, making the card just as flexible as a true Transformer
Creature removal Enchantment removal Discard Permission Lock Components (Spellskite, Torpor Orb, Night of Souls Betrayal, Illness in the Ranks) Even if Splinter Twin was banned, Chrome Mox threatens to turn any other turn 4 combo decks into turn 3 combo decks
Now, from a design and gameplay perspective, Jace works because every ability pushes the same control game plan instead of pulling in different directions
Turning a few clunky cards into interactive pieces can elevate a Commander deck to the next level
This is why cards like Doom Blade, Thoughtseize, and Dark Ritual are so iconic and integral to Constructed
The turn you play this, it is likely to have a pretty big impact the board, provided you have any creatures in play at all