Hi ZEXER,
the effects you are seeing on Apotheosis and Steel Skin are part of the status
After cast, your character gets a status effect set (logic behind setting these status effects is generally in the behaviour scripts).
This status has an effect assigned to it, and that effect makes the gold happen
So instead of looking at the skill pages, you'll want to look at the status pages of the stats editor.
Sincerely,
Kevin