There's an argument to be made that using Vivi as intended can result in long, drawn-out games of Commander where your opponents can get easily frustrated, but the strength of Vivi lies in his versatility
Creatures (26) 3 Scavenging Ooze 4 Ghor-Clan Rampager 1 Sire of Insanity 4 Elvish Mystic 4 Polukranos, World Eater 4 Sylvan Caryatid 4 Stormbreath Dragon 2 Courser of Kruphix Planeswalkers (7) Lands (23) Spells (4) You can also slow the deck down a bunch and shift the focus away from creatures, becoming a midrange control deck
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, Exile three creature cards from your graveyard: Put an indestructible counter on Drivnod
Second, it prevents opposing monsters from activating their effects on the board while it and Light Barrier are in effect
(2/1/2014) If you tap Phenax to activate the ability it grants itself, and Phenax is no longer a creature but still on the battlefield as that ability resolves, no cards will be put into the target player's graveyard
