[3.5 and Path] Ways to auto crit(not auto confirm)

[Mr. woop woop]

To specify a bit. This question is for 3.5 and pathfinder independent of each other.

In pathfinder there is a fighter archetype called the Two-Handed Fighter(It's a little down the page.)
Are there any other effect like

(click to show/hide)

Devastating Blow (Ex): At 19th level, as a standard action, a two-handed fighter may make a single melee attack with a two-handed weapon at a –5 penalty. If the attack hits, it is treated as a critical threat. Special weapon abilities that activate only on a critical hit do not activate if this critical hit is confirmed. This ability replaces armor mastery.

I have to ask because I don't want to go 19 levels into fighter. :b

[kitep]

There's Reciprocal Bracers (MIC, p120) - if someone crits or sneaks attacks you, then if you hit them back you can use an immediate action to treat your hit as a critical threat (you still have to confirm).  Only usable 2x/day, 5000gp.

Power Critical (Masters of the Wild, p24) is a feat that 1x/day lets you declare an attack to be an automatic threat if you hit.

Good luck!

[phaedrusxy]

One version of the hunter's mercy spell automatically hit and threatened.

[IlPazzo]

Surge of Fortune from Complete Champion is a Cleric 5 spells that allows you to treat a single dice roll as a natural 20.