if youre just adding a Basalt Monolith combo to the 99, I suggest looking into the Forensic Gadgeteer combo as a mono-colored option or even Rings of Brighthearth for a colorless combo
And the card draw trigger gives your 2-mana commander some late-game relevance
Pilots pair very well with Vehicles and Mounts, with effects that make it easier to crew or saddle, respectively
While Treasure Hunt is probably a fine addition to some sort of Golos, Tireless Pilgrim / Field of the Dead strategy that's playing 30-ish lands, from a less competitive (but more fun) perspective, it also opens up the possibility of a classic meme deck coming to Historic: The idea of Treasure Hunt is simple and based on a Modern combo deck we've played in the past that uses Zombie Infestation as its finisher, rather than Jace, Wielder of Mysteries
We'll run our Daxos and Thada Adel nonsense in this deck, a few counterspells to keep things where they should be, a bunch of ways to make tokens and we'll call it a day