Im personally most excited about using Kaito to facilitate aggressive Dimir decks in conjunction with other Ninjas, but the looting ability allows the card to seamlessly fit the bill for Reanimator decks as well
The saga allows you to destroy planeswalkers or creatures, make opponents discard, and for a great finale, reanimates all creatures from graveyards
At the very least this has got to compete for slots in the Karn, the Great Creator boards
Then it becomes one of the best mass removal spells in the game when you hit 7 mana and can be used to steal games you are behind in easily
On the Commander-side, Kinnan, Bonder Prodigy super charges mana dorks while also containing his own built-in threat engine
Its simple, but its powerful