The main problem with spellblades is that they are introduced as extensions of the Powerball/bolt and Manaball/bolt spells, which would make them direct combat spells, but then the effects described are more consistent with indirect spells. Either they are direct combat spells in the Power/Mana family, or it's an indirect combat spell and the whole Power/Mana angle should be abandoned. I quite like the idea in theory, but the rules need a little more thought. An indirect combat spell has a damage value of Force + Net Hits, resisted by Body + Armor, while a direct combat spell has a damage value of only Net Hits (regardless of Force) and the damage is unresisted.
I would suggest the following options for clarification:
SPELLBLADE (Indirect), Type P, Duration S, Range Special, Drain F-2
This spell creates a melee weapon made of sustained magical energy. The initial Spellcasting Test for an Indirect Combat Spell (SR5 p.283) is Spellcasting + Magic [Force] vs. Reaction + Intuition. This test does not immediately damage the target; if successful it merely creates the Spellblade, which then functions as a melee weapon with a base damage value = (Force + Net Hits)P, armor penetration = -(Force), accuracy = (Force), and +1 reach. On subsequent actions, the spellcaster may make normal melee combat tests using Blades or Clubs + Agility [Force] vs. Reaction + Intuition. If successful, net hits from the attack add to the damage value of the weapon. Damage (if any) is resisted normally using Body + Armor - AP. The Spellblade may target physical objects and may parry (and be parried by) ordinary melee weapons. If the spellcaster uses the blade against multiple opponents, each new opponent must resist the spell separately, comparing their hits to the spellcaster's original hits. This means the base damage value of the Spellblade may differ from one target to the next. There is a normal -2 penalty for sustaining the spell.
POWERBLADE (Direct), Type P, Duration S, Range Special, Drain F-2
This spell operates on the same principles as a Powerball or Powerbolt. The initial Spellcasting Test for a Physical Direct Combat Spell (SR5 p.283) is Spellcasting + Magic [Force] vs. Body. This test does not immediately damage the target; if successful it merely creates the Powerblade, which then functions as a melee weapon with a base damage value = (Net Hits)P, accuracy = (Force), and +1 reach. On subsequent actions, the spellcaster may make normal melee combat tests using Blades or Clubs + Agility [Force] vs. Reaction + Intuition. If successful, net hits from the attack add to the damage value of the weapon. Damage (if any) is not resisted; the target may only oppose the initial Spellcasting Test and each subsequent Melee Attack Test. The Powerblade may target physical objects and may parry (and be parried by) ordinary melee weapons, but it ignores armor. If the spellcaster uses the blade against multiple opponents, each new target must resist the spell separately, comparing their hits to the spellcaster's original hits. This means the base damage value of the Powerblade may differ from one target to the next. There is a normal -2 penalty for sustaining the spell.
MANABLADE (Direct), Type M, Duration S, Range Special, Drain F-2
This spell operates on the same principles as a Manaball or Manabolt. The initial Spellcasting Test for a Mana Direct Combat Spell (SR5 p.283) is Spellcasting + Magic [Force] vs. Willpower. This test does not immediately damage the target; if successful it merely creates the Manablade, which then functions as a melee weapon with a base damage value = (Net Hits)P, accuracy = (Force), and +1 reach. On subsequent actions, the spellcaster may make normal melee combat tests using Blades or Clubs + Agility [Force] vs. Reaction + Intuition. If successful, net hits from the attack add to the damage value of the weapon. Damage (if any) is not resisted; the target may only oppose the initial Spellcasting Test and each subsequent Melee Attack Test. The Manablade is intangible to physical objects; it may not parry (or be parried by) ordinary melee weapons. If the spellcaster uses the blade against multiple opponents, each new target must resist the spell separately, comparing their hits to the spellcaster's original hits. This means the base damage value of the Manablade may differ from one target to the next. There is a normal -2 penalty for sustaining the spell.