Mage Slayer Line

[Wind Chime]

I was thinking of converting the 3.5 Mage Slayer feat line to pathfinder, this included Mage Slayer: Enemies you threaten can't cast defensively, Pierce Concealment (ignore miss chance and detect right mirror image), and Pierce Magic Protection: Ignore AC boosts from spell. Are they overpowered for pathfinder ? what changes would I need to make to them?

[inkedmsd]

I adopted a class from Diablo 2 that focuses on Mage Slaying. I would be interested to see what you come up with and may want to borrow them for this class. Here is more on the class: Maiden of Horadrim.

[ShadowcatX]

I would compare them to the existing anti-mage feats (whose names escape me) and see where they stand. I doubt they'd be too powerful, although pierce concealment sounds like it could be, depending on its exact wording.

[inkedmsd]

It really depends on the adventure I guess. They only come into play with mages. Like the current campaign I think I used my feats once towards a mage. Then he teleported away. :(

[necromental]

3,5 Mage-Slayer feats are better than the PF line. And are not fighter only. But they do have that -4 to caster lvl, so they're not an option for a gish. I thought that automatic dispelling is a bit much (for Pierce feats) so I changed it to "suppresses for 1 round" and reduced caster lvl penalty to -1 for each one.

[VM mercenario]

Mage Slayer by itself blows both the PF feats, Disruptive and Spellbreaker, out of the water.
Disruptive and Spellbreaker, make it harder to cast defensively and you get an AoO if they fail the concentration check on top of the AoO for casting the spell.
Mage Slayer doesn't allow threatened caster to cast defensively. At all.
Pierce Magical Concealment is awesome, but a little OP.
Pierce Magical Defense is really OP. Take off the dispelling and it goes back to just pretty darn good. It's the only change I would make.
I would keep the -4 to caster level. Keep this feats focused on true martials. Casters and Gishes already have plenty of nice things.