You inherit the spells at each indicated magus level in the Spellblade Spells table as magus spells.
You can take the Magic (Attune) action with one melee weapon of your choice. While equipped and attuned to it, you gain expertise with it, and when you take the Attack action with it, the attack roll's critical hit threshold decreases by 1.
When you take the Attack action with a weapon you are attuned to, or the Magic (Spellcast) action to cast a magus spell that deals damage to a target, you can increase the damage by 1d4 force damage for each 5 additional mana points you expend.
Whenever you expend a mana point, you regain 1 expended stamina point. Moreover, when you expend a stamina point and you have no mana points, you regain 1 expended mana points.
While equipped to an attuned weapon, you become imbued with your choice of the elemental weapon spell or the magic weapon until you unequip it.
When you take the Magic (Spellcast) action with a magus spell that requires you to take the Attack action as part of the spell's effect, the spell's casting time is reduced to 1 action. Moreover, if you take the Magic (Spellcast) action to cast one of these spells targeting a different creature on the same turn, you deal an additional 2d10 force damage against each target hit.