As with Werefox Bodyguard, having a sideboard option that works with our Elf synergies is extremely useful
With the lands in the cube he is typically quite powerful utility as well
Abzans identity has been slowly shifted more and more towards the graveyard, with counters themes being siloed into GX color pairs (although a certain Phyrexian Angel Horror remains the expanded exception), but Ghave gives players a reason to slam Corpsejack Menace, Conclave Mentor, and Felisa, Fang of Silverquill all in one deck, and thats beautiful
This element of FITS feels heavily inspired by cult indie classic Into The Breach, with that games tactical puzzle of tight movement and damage reduction taken from its original theming of massive robots fighting huge bugs and swapped to a suave simulation of Casino Royale-style punch-ups
Being an enchantment makes it a valuable card to potentially diversify your graveyard from something like a Mindwrack Demon mill, and being a legendary enchantment means that you can naturally get one to your graveyard by casting a second copy when you already have one on the battlefield
Its still locked to a hyper-specific archetype and still has that issue of not wanting to knock a player out with poison too early, lest you give up some of your precious card advantage