Bonus to pass tests of skill to:
Identify spells or enchantments. Research, alter, or invent spells. Understand arcane magics and spellcasting. Decipher the meaning of runes and glyphs. Apply the principles of magic. Sense the presence

This bonus to tests of skill is a training bonus.
If you have more than one training bonus which applies to the same roll, use the best one.

Example DCs:
Identify a spell that you know as it is being cast: Automatic
Identify an ordinary spell as it is being cast: DC 15
Identify an obscure spell as it is being cast: DC 20
Identify the magical properties of an item: DC 15 (Harder than Artifice)
Detect overwhelming magic in your immediate vicinity: Automatic
Detect massive quantities of magic: DC 5
Detect ordinary quantities of magic, such as those from a normal enchantment: DC 15
Detect traces of magic: DC 20
Detect faint traces of magic: DC 30
Decipher simple glyphs: DC 15
Decipher complex glyphs: DC 20

Altering Spells:
Doubling the area of an area spell you cast by halving its damage is DC 10.
Protecting one target from the effects of an area spell you cast is DC 15.
Changing the element of a spell you cast is DC 20.
Making a single target spell you cast affect an extra target requires a critical success.

You get:
+1 to the DC to Counterspell or Dispel your spells
+1 to tests of Dispel
+1 to tests of Counterspell

You trace a shape or symbol in the air or on an object with your hand, leaving a trail of faint light in a color of your choosing behind it, creating a magical glyph which illuminates the space it occupies with dim light.
Glyphs made in the air float in place. Glyphs attached to an object move with them.

You can make the glyph disappear as a fast action.

(The light cast by a glyph is too dim for most practical uses,
but painting the walls with them could be used to reveal creatures or objects which occlude them in the dark.)