It does stuff from the graveyard
Although there are some other cool options for the commander of Esper Zombie Tribal, like Hashaton, Scarabs Fist (focusing more on reanimation) and Varina, Lich Queen (a very strong alternative), Temmet, Naktamuns Will seems like the optimal choice if build properly and there are a few ways to do that
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But if you enjoy it, keep it
(If you want to learn more about Gladiator, and you definitely should, go here!) And since Commander is about doing the most obviously over the top stuff Magic can hold, and Standard frequently becomes about the most blatantly pushed stuff anyhow, this is probably a use-ful theory exercise on watching for the right kinds of cards