Your biggest problem will be defending Teval, who has no protection against removal, will suffer when cards are exiled, and who must constantly jump into the fray of battle
If you'd like a deck built you can find me on Fiver.com as genoslugcs
Among main decks of Izzet Prowess builds specifically, 6 players are running four copies, 75 are running three copies, 32 are running two copies, 8 are running one copy, and 19 are running no copies of Vivi Ornitier
You can choose to either create a 1/1 Myr whenever you cast an artifact, or suddenly take out one player during the end step
When the last is removed, you may cast it without paying its mana cost.) Sorcery The Blackstaff of Waterdeep You may choose not to untap The Blackstaff of Waterdeep during your untap step
If we have several level-up creatures on the battlefield, the ability to add two level counters to each for free is often worth five or even 10 mana, which makes Venerated Teacher pretty great
