cards like sneak attack mtg #145 Holo from Double Masters (2XM) Proxy Sacrifice the creature at the beginning of the next end step Attaque furtive MTG - Double

Tracker is just a powerful card you play for that reason, it is not something you overly need in the deck

Each of those (Golem, token, power 3) are solid subthemes to leverage for additional, unique advantages

You could just use this as a sac outlet that nets Treasures, but my mind goes immediately to Gravecrawler and any third combo piece you can think of

Chrome Mox, Mana Crypt, Sol Ring, and Arcane Signet make up all of the rocks in the list

6 The Fantastic Four Mister Fantastic, Invisible Woman, Human Torch, Or The Thing I can happily admit when I don't like a deck, and this is the case with the Fantastic Four precon, but I have to acknowledge that it's a really great precon that is super fun to play and never feels imbalanced or jarring regardless of which Commander you choose

You can't stack roles on the same creatures, so it encourages a sort of go-wide Voltron build, which sounds weird when you say it out loud