Price of Limitation "One Attack Only" in Defenses

[NaiveWanderer]

TLDR: How much would the Limitation "One Attack Only" worth for Defenses? LIke, this Defense only works once, to reduce single Attack?

I'm trying to make a "temporary invulnerability" skill where a character could survive even the most absurd attacks just because he got "lucky."

Checking Powers, I liked the suggestion of using Injury Tolerance (diffuse) i liked especially because this advantage doesn't protect you against area damage! (I pictured the power as being something that could be justified as a "glancing blow" and so it wouldn't work against things like explosions)

This was my first attempt:

Injury Tolerance (Diffuse) [100]

• Emergencies Only, -30%
• Limited Use (1/day),-40%
• Reflexive,, +40%
• Require awareness, -20%
• Unreliable (activation 14), -10$

But then I realized, reading Limited Use that "For most advantages each use is 1 min of activation." Well that's not exactly what I was thinking, that way the character be "invulnerable" for 1 minute?!

So I applied "Duration Reduced 1/60 by -35%" But that still doesn't seem right to me, after all with that the advantage would still last the entire turn, and I would like it to last only for one attack.

There is already a "One attack only" limitation for Striking Strength for -60%, but this seems too much compared to -35%. How much would a fair price be for that single limitation?