Ok, so I tried stuff from both of y'all. Feasting troll king is like you said a good recurring threat. Hydroid Krasis and Nissa as well getting the job done, and Planewide celebration giving options. Agent of Treachery just shuts people down. Koira adds to the consistency and ramp as well as having synergy with Vannifar and Druid. Added in some 1-ofs to supplement the strategy. Spark double works well and is versatile with many situations, Gadwick the Wizened helps with draw/tapping their stuff, and Apex Hybrid to add counters as needed and to be sac'd by Vannifar to pull Troll king while simultaneously being a big proliferate threat for a full board ala Nissa. Threw some negates in of course. Need to try those lands that put instants/sorceries on top of library. Works great overall! Will probably tweak it as I go but I was surprised how well both of what y'all said actually worked well together lol. Thanks for suggestions.
Also working on another artifacty esper deck that I'm pretty excited about with Gingerbrute, All that Glitters, Smothering Tithe, Folio of Fancies, Mirrormade, Arcanist's Owl, Ob Nixilous the Hate-twisted, and Tezerret Master of the Bridge. Got the typical Teferi, Oath of Kaya, and counterspells in for control. Gadwick the Wizened for draw and tap opponent. I've got a good combo with Smothering Tithe... I just feel like something is missing, like I'm 75% there. Smashing faces with a virtually unblockable Gingerbrute feels good and I recommend cookie destruction for anyone who is having a bad day.