Of all the things about this suggested piece, I like the name for sure, and am mostly interested in the feedback for the trigger.

Image is small, so for easier reading:

PastForward
"[Pay 1]: Trigger: At the start of your turn, adjacent units - if a unit had any of its moveset, passives or augments changed during the game, restore it to original. Does not trigger on or restore morale."

Usage:

• counter VoidMage
• counter future NullMage - not morale to 0, just the ghosting
• reset Gluttony
• reset future piece that acts like Gluttony on passives / augments, etc.
• and reverse transformations ?? I have no idea if that could work, or if it will be desirable, because then this shoots to whole new level of countering, and cannot be even trigger, but needs to consume turn / action to use