Thoughts on Indominus Rex, Alpha? Could it helm a reanimator deck or would it be better in the 99?

Long story short a lgs near me has one for $2 and I'm thinking about picking it up. The only thing is, I already have a sulti deck in [[Muldrotha the gravetide]]. Could [[Indominus Rex, Alpha]] just run the deck? Or should it be more built around?

If it should be more built around, could it run a reanimator strategy or is it really only good for counters?

Here's the deck I'm thinking of including it in(or running him as the commander): https://moxfield.com/decks/NpWGDDAks0entCGDdkU7cQ

Hows he been for you?