Undrave
Legend
Exactly! But with more granularity. Similarily, Casters could become 'attuned' to the element they just used and thus gained its weakness. You use a Fire spell, you become resistant to Fire for a turn, but weak to others spell that might specifically be good against creatures 'Atuned to Fire'.Like 5e's barbarian reckless abandon ability to give the barbarian advantage on attacks for a round while granting advantage on all attacks against himself.
Shades of the Bravura here, where willingly opening yourself to X gives bonus Y to an ally.I’m a big fan of these in RPG. Similarly, I also like special techniques that play into the weaknesses of your opponents, so not all of your abilities have the same return in every combats.
Add both together and you could do X to incite your opponent to do Y, setting you up for attack Z which is strong in reaction to Y.
It’d probably be a nightmare of game design however.
Just make it 'doing this type of move always opens you to this time of more' and let the players figure out how to chain them together.
Heck, make those exposed weaknesses even more devastating if your move fails!
Then, to make things even crazier: make it possible to feint that you missed!