Unnatural Growth plus Xenagos, God of Revels makes quite a few creatures (especially commanders) into raw killers
My parting advice is to remember that your priorities may vary depending upon the power level of your playgroups decks, your budget, and your personal playstyle, so dont be afraid to adjust as appropriate
An element I often see missing from the argument that stax decks arent interactive, both online and in my pods, is a lack of removal
Alternate art cards and Special Illustration Rares are consistently strong targets because the artwork drives collector demand beyond just gameplay value
Its a little tricky, but Fireball can hit a lot of things at once if you have the mana
While there are numerous options in these elements, most of them currently are only rarely played