Vivi Ornitier shines brightest on turn four: after Vivi Ornitier resolves, you can follow up with Monstrous Rage to bring the Wizard up to four power, activate its mana ability, and still have four mana left to cast additional spells
As you can the also play those cards and draw only one card from the deck you can end up with a diminishing hand very quickly
Again, the best case scenario is likely a few dollars, and seeing 4-of play is far from guaranteed, but the benefit of buying bulk-level dragons is they all seem good for the long-run from casual demand alone (barring reprintings of course)
Both cards should be solid inclusions in a Tazri, Beacon of Unity EDH deck
Cards like Ursula Deceiver , Merlin Rabbit , and Merlin Goat are Characters we can return since can benefit from bouncing them back
It works straight away, exactly like an action card