Other cards revealed in the stream today show the range of powers and potential archetypes available to players, including Fierce Empath, which can help you find huge creatures hiding in your deck, and Runed Halo, which can offer a lot of protection against decks aggressive or tricky decks, and Teferi's Ageless Insight, which will allow players to draw tons of cards (everyone loves to draw cards!)
Whats interesting, though, is that outside of a few cards that can fish instants and sorceries out of the graveyard, blue struggles with casting these cards again and again
These can give you a two-for-one-trade at best
If it's a permanent spell, the copy gains haste and "At the beginning of the end step, sacrifice this permanent." (A copy of a permanent spell becomes a token.) Creature - Beast Demon Color tag templates(None) Nightscape Familiar Blue spells and red spells you cast cost less to cast
With enough auras and equipment spells attached to the right commander, it can be easy to eventually inflict 21 commander damage to your opponents to win the game