A spellblade magus can manifest a ghostly blade of force that can be used as an off-hand weapon.
At 2nd level, a spellblade magus can sacrifice a prepared magus spell of 1st level or higher as a swift action to create a dagger of force in his off hand. The athame lasts for 1 minute or until dismissed, has an enhancement bonus
on attack and damage rolls equal to the level of the spell sacrificed
(maximum +5), and is considered a weapon the spellblade is holding for
purposes of his arcane pool feature (using the pool to add abilities to a
held weapon applies to the magus’s physical weapon and to the athame
for no additional cost). The athame acts as a dagger, but the hand
holding it is still considered free for the purpose of casting spells
and delivering touch attacks. The magus can use the athame as if he were
fighting with two weapons, or can use that hand to cast spells as part
of the spell combat class ability (but not both in the same round).
Attacks with the athame are force attacks and deal force damage.
This ability replaces the spellstrike class feature.
A spellblade gains access to the following magus arcana. He cannot select any arcana more than once.
Pool-Sourced Athame (Su): Instead of sacrificing a prepared spell to create the force athame, the magus can spend points from his arcane pool to do so. An athame created this way has an enhancement bonus equal to the number of arcane pool points spent.
Spellblade Parry (Su): When an enemy makes a melee attack roll against the magus, as an immediate action the magus can end the athame’s duration to gain a deflection bonus to his Armor Class until the end of his next turn. This bonus is equal to the level of the spell sacrificed to create the athame (maximum +5).
Throw Athame (Su): As a standard action, a spellblade magus can throw his athame up to 60 feet as a ranged attack (no range penalty). If the athame misses, it returns automatically to the magus’ hand just before his next turn. If the athame hits, it deals damage and its duration ends; the magus can choose to spend up to 2 points from his arcane pool to increase the thrown athame’s damage by +1d6 for each point spent.
Magus Arcana: The following magus arcana complement the spellblade archetype: critical strike, hasted assault, pool strike, and spell shield.