legendary duelists white dragon abyss booster box YU-GI-OH! Duelists: : Toys & Games Each box contains 2 Legendary Duelist trading card pack World Premiere Pack 2021 Dark

With Ultima in play, you can start dropping them early on, even without any additional ramp or mana rocks

Plus, its almost free to add to a deck that requires key threats to be protected from spot removal, so your commander gets harder to kill if you have a few untapped creatures laying around

Infinitely powerless

You have an idea, test it, see what you learned, think on it for awhile, and then try something new based on what you learned

Other than Mewtwo EX , I could perhaps see a use for Tornadus EX , Shaymin EX or Sigilyph (the last two would mean I would have to add Blend Energy GRPD which wouldnt be too big of a deal)