Mental Misstep Mental Misstep is a card that shows off how broken of a mechanic Phyrexian mana is
However, theres nothing stopping a creature with both flying and first strike
Core synergy pieces Tax and lock pieces: Resource denial: Value under locks: Commanders 27.3% (3) 27.3% (3) 27.3% (3) 18.2% (2) How to beat it Flexible permanent removal is the most direct answer because modern stax pieces are spread across creatures (Drannith Magistrate, Collector Ouphe, Archon of Emeria), artifacts (Sphere of Resistance, Winter Orb), and enchantments (Rule of Law, Deafening Silence)
We tried everything we could to beat it, including maindeck copies of High Noon and Magebane Lizard
It'll still have menace even if it stops being equipped
Both versions are about the same price, as is common on these Commander set printings that only have regular and EA versions, so buy whichever you like