I think that everyone agrees that witchers need some love, they are the coolest cards from the game, dont forget the game is all about them, yet they are actually never used. Here are my ideas:
Eskel: Pathfinder
He is too expensive and does something 6 provisions are able to do while also being row locked
Improvement:
8 power , 9 provisions
Deploy: Spawn Forktail on the opposite row and infuse it with: Whenever my opponent spawns or plays a witcher, damage self by 1, deathwish: deal 1 to all allies.
Damage it by the number of unique witchers on your side
Geralt: Axxi
Is fine as is but he needs to count himself as a witcher on his deploy. Other cards like Yaevinn work this way but Geralt doesnt which makes no sense and it wouldnt make him op, right now he is pretty weak.
Mad Kyian
Too expensive for what he does and the deathblow just makes him suck.
Improvement:
8 power, 9 provisions
Formation
Deploy: Damage self by 4, turn one point of the damage into one boost for every witcher on this row
Order: Damage an enemy unit by amount of boost on self
Deathblow: Boost self by excess damage dealt
Source: https://www.reddit.com/r/gwent/comments/12qhea2/ideas_for_witcher_cards_that_need_improvement/