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I could also see this as a sideboard option in a similar role that Otter Ral plays in Izzet decks

The deck seems to have some reasonably good value overall

Art by : Mathias Kollros How to get it : Set Mastery Value : Mastery Pass @ 3,400 gems Theros: Beyond Death Ashiok Extended art of Ashiok, Nightmare Muse

Once you add red or blue into the mix, your available options to abuse The Gitrog Monster skyrocket in decks dedicated to lands or recursion such as those headed by Lord Windgrace or Muldrotha the Gravetide

The best modular cards help you enable that strategy

It also has flashback for the cost of sacrificing three creatures, which probably isnt that much of a cost in the first place