Ritual Casting (Constitution; Trained Only; Armour Check Penalty; Spellcasters only, cross-class paladin, ranger)(Intelligence)

You can combine your spell-casting powers with other witches. In addition you have learned to deal with the rigors that are required to perform rituals. You can handle the long duration of the casting required to draw in extra magical power.

• Check: You can attempt to cast augmented and combined ritual casting spells that require an hour or more of casting. Each hour, or portion thereafter, requires a Ritual Casting check against a DC of 10 + spell level. Each check after the first one increases the DC by +1 until the end of the casting. A failed Ritual Casting check results in a loss of control over the magical powers being harnessed. See augmented and combined ritual casting sections for results of the failure.
• Retry: No.
• Special: If you have 5 or more ranks of Concentration, you get a +2 synergy bonus on Ritual Casting checks. This skill is cross-class for paladins and rangers.