At 5th level, a skald is learned in the magic of other spellcasters, and can use his own magic to duplicate those classes' spells. Once per day, a skald can cast any spell on the bard, cleric, or sorcerer/wizard spell list as if it were one of his skald spells known, expending a skald spell slot of the same spell level to cast the desired spell. A spell cast with spell kenning always has a minimum casting time of 1 full round, regardless of the casting time of the spell.
At 11th level, a skald can use this ability twice per day. At 17th level, he can use this ability three times per day.