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I feel like this post is meant to ventilate frustration in the delta aspects of witches and wizards, so I'll rest my case here.
I hope my insight...
Casters don't need buffs, they're perfectly fine as they are. I would suggest trying another class.
Need Grapple Resists?
Use Talis Helmet or...
Easy, just use the evasion skill and weave in and out around them dodging their grab. You can't have it all. Witches/Wizards are powerful.
The counter to a grab is an i-frame (invincibility frame) skill. You don't need anything else. Position yourself properly and you'll be fine.