Epic Skill Powers:

There are some extra Skill Powers that are intended for use by epic level characters. Anyone taking one of these Skill Powers must be an epic level character. Epic skill powers can not be traded with the feat Skill Swap

Arcana (Int): Arcane Mastery

When using Arcana to cast a spell, you may choose a spell up to 2 levels higher (up to spell level 3 without Arcane Study; up to level 5 with Arcane Study). The DC increases based on the spell level as follows: level 2: 20; level 3: 25; level 4: 35; level 5: 40. In addition, you can cast a spell using Arcana one additional time per day.

Intimidate (Any): Sheer Terror

The following effect is added to the list of effect you can choose from when using Intimidate:

-The target suffers 50 damage; damage reduction does not apply (1 full-round action, you suffer a -12 penalty to the check).

Medicine (Wis): Medical Miracle

Healing you cause by treating wounds is tripled. In addition, if you have the skill trick Resuscitation, the time limit to start treating wounds after death is increased to 1 hour.

Parkour (Agi): Impossible Escape

You may, 3 times per day, attempt to make an Impossible Escape. Make a DC 35 Parkour check as a free action. If you pass that check, you can walk through walls for that round.

Perception (Wis): Mind Scan

Three times per day, you can use Perception to try and read someone's thoughts. Make a Perception check opposed that creatures Deception check; you suffer a -5 penalty on your Perception check. If you win the check, you can read the target's surface thoughts for the next minute.

Perform (Cha): Mass Sound

When you use Perform to assist your allies, you may assist up to 100 allies with the same Perform check. If you choose to assist more than 10 people, you suffer a -10 penalty on the check.

Religion (Int): Divine Mastery

When using Religion to cast a spell, you may choose a spell up to 2 levels higher (up to spell level 3 without True Faith; up to level 4 with True Faith). The DC increases based on the spell level as follows: level 2: 20; level 3: 25; level 4: 35; level 5: 40. In addition, you can cast a spell using Religion one additional time per day.

Stealth (Dex): Night Reaper

Three times per day, you can make a Stealth check to attempt to blend into shadow. Make a DC 40 Stealth check; if you pass this check, you have concealment for the next hour; if you would have concealment from another source, you have total concealment.

Epic Chain Spells:

Some spells have a powerful extra effect when cast from spell slots larger than 9th level. Those spells are as follows:

Raise Dead:

If cast as an 11th level spell or higher, Raise Dead can raise the target no matter how long they have been dead. It can even raise creatures that died of old age; such characters become 1 year younger in the process. However, if cast as an 11th level spell or higher, the required diamonds increases to 15,000 gp.

Teleport:

If cast as an 11th level spell or higher, Teleport can go to any location, regardless of distance; you do not need to have visited your destination. It can even teleport from one plane to another. However, if cast as a 11th level spell or higher, the required rubies increases to 300 gp.

Wish/Miracle:

If cast as a 13th level spell or higher, Wish becomes even more powerful. It can do any of the following:
-Duplicate any spell of 12th level or lower.
-Create any item of up to 5,000 gp in value.
-Add +50 to the next skill check you make.
-Produce any other effect whose power level is in line with the above effects.
However, if cast as a 13th level spell or higher, the required emeralds increases to 5,000 gp.