Renegade Silent TheChirurgeon: The big deal with the Silence is that anyone not looking at them immediately forgets all about them, making their whole existence something of a secret
Each dog is extremely cute and your best friend in the entire Multiverse
I play a lot of Green decks, some of that is for the ramp, but just as big is making sure you hit every land drop and Environmental Scientist is very good on that front
Its got no Demonic Tutor equivalent, but Imperial Recruiter sure churns out value all the same
Renown creatures are good and important, and they make blocking hard once they get through, and there are a lot of ways to push damage
Kimahri's restrictive mana cost and relatively minor abilities may limit its playability, but it could find a niche in casual Commander games or themed decks