Zellix shares almost all the same lines of synergy as Nghathrod when played as commander, so if you feel like more early combat pressure is preferable to fun steal their card triggers, you can try it out without need for any other changes
If you have Metallic Mimic in play and cast something like Battle Screech, all the flying tokens enter with a +1/+1 counter, so it works wonders with go-wide decks
Prosper, Tome-Bound requires considerably more setup to use optimally, but if your deck is already playing a lot of cards that let you play cards from exile, the value it generates from its Treasure tokens can be absolutely silly
It's the idea that you're trapped, that your air supply is diminishing, and that you're buried so deep that you'll never be found and will die a slow and painful death
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