(Did you know that Demonic CovenantDemonic Covenant is the only Kindred Enchantment that mills you?) Oh hey
Since Esper Sentinel has a base power of 1 and the current power is 3, Sovereign Okinec Ahau attacks and places two +1/+1 counters on Esper Sentinel
Every combat phase lets you blink all your Hare Apparents, generating even more Rabbits
3 Tabletop Simulator Real-World TCG, Virtually Played
It gets way better with all the staples like Anointed Procession, which lets you create twice that many tokens
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