I would also suggest to change the token effect, as there are too many resource gaining tokens already available.
Idea of keyword itself is regain lose resources, not gain more. I add overcome for avoiding of useless tokens resets.
But it's discussible of course.
How about this one: Magic Immunity - Cancel the positive/negative effect of opponents last round (basic 10%, uncommon 30%, rare 50%)
Why not, it's frequent confrontation in fantasy-steampunk settings — magic versus mechanic/steam (diesel :-E).
Trouble place in both variants is absence of initiative: opponent can guess tokens reset with ease and just don't do harm action in this round. It will only token, side-effect of which depends on opponent's move directly.