There is a Remastered version
here.

Touch of Corruption
[one-action] Focus 1Legacy Content
Uncommon Champion Necromancy Negative Source Advanced Player's Guide pg. 229 2.0Cast [one-action] somaticRange touch;
Targets 1 willing undead creature or 1 living creature
You infuse the target with negative energy. If the target is living, this deals 1d6 negative damage (basic Fortitude save); on a failed save, the target also takes a –2 status penalty to AC for 1 round.
If the target is a willing
undead creature, the target instead regains 6 Hit Points, and if you are the undead target, you also gain a +2 status bonus to damage rolls for 1 round.
Heightened (+1) Increase the damage dealt to a living creature by 1d6 or increase the Hit Points regained by undead by 6.