Channel Spell (Sp): At 4th level, a spellsword can channel any spell he can cast into his melee weapon. Using this ability requires a move action, and the spellsword uses up the prepared spell or spell slot just as if he had cast the spell. The channeled spell affects the next target that the spellsword successfully attacks with his weapon (saving throws and spell resistance still apply). Even if the spell normally affect an area or is a ray, it affects only the target. The spell is discharged from the weapon, which can then hold another spell. A spellsword can channel his spells into only one weapon at a time. Spells channeled into a weapon are lost if not used in 8 hours.