Seriously, The Mimeoplasm is an amazing commander and can be as powerful as you want him to be/as powerful as your opponents want their decks to be
This leaves us with seven cards
W for a 1/1 (So far, so good.) 2W for a 2/2 (Pearled Unicorn, but not horrible.) 10W for a 5/5 first strike creature (Wait, what?) 1U for a 0/3 (Eh, but bearable.) 3U for a 0/6 (Getting pretty bad here.) 11U for a 6/6 islandwalk creature (Wait, what?) B for a 1/1 (Muck Rats, but okay.) 4B for a 3/3 (Looking a little worse here.) 12B for a 5/5 creature with pseudo-fear (Wait, what?) Those ultimate mana costs were paid out over multiple turns, but if your creature died before hitting their highest level game over, tons of wasted mana, yikes
Disappear is super easy to trigger, so getting an extra card off this nasty ninja is dangerously easy
Higher Trade Value in Communities : Rare Japanese cards can become trade bait or collectibles in global fan groups