This is an effect that a specific tribal deck really needed to compete with damage-based Wrath effects
These collector boosters have been incredibly hard to come by, hence the high pricing
11 Big spells with landfall (and entering the graveyard) triggers to close out the game
While I could get behind a similar card designed to hate on the plethora of powerful one-drops in the format, the Phyrexian mana cost of Mental Misstep puts it over the top and allows it to warp the format
Fallout definitely looks like its going to be one of the best sets in the past few years when it comes to support for Auras and Equipments, which Im told is pretty fitting given how pivotal your character inventory and loadout are in the series
The two work best when together, of course, but there are also tons of new artifact creatures that care about energy, both in the Fallout precon and throughout Modern Horizons 3 , and even a little bit back in Kaladesh