The big limitation is the lack of other Kavu, but Possibility Technician seems borderline playable as your only Kavu (along with a Soulstone Sancturary or two to late game be able to play any exiled cards)
(It's not a creature.) If an ability triggers whenever an opponent loses life and its effect causes you to gain life, such as the ability of Exquisite Blood, this will loop until either you win the game or a player takes an action to break the loop
There are a bunch of decks that can reliably trigger this, from Ashling to Neheb, the Eternal
Lorehold Spirit (Red/White) Leave the graveyard, buff spirits Helmed by Quintorious, History Chaser, this Planeswalker can create Spirit Tokens and buff them with double strike and vigilance
Fight with a friend at your back, steel in your hands, and magic in your veins