Bio Blade (バイオ剣, Baio Ken?), also known as Bio Sword or simply Bio, is a recurring ability in the series. It is generally a powerful Poison-elemental or Non-elemental Spellblade that can allow the user to inflict the Sap or Poison status when attacking physically. It usually requires having learned the spell Bio in order to use it.
V Bio is a level 4 Spellblade ability, costing 6 MP to cast. If a non-heavy enemy is weak to the Poison-element, it will instantly kill that enemy. Otherwise, against non-heavy enemies, the power of the user is quadrupled and their attack pierces the enemy's defense.
Dark damage and poison one enemy
Bio Blade is a craftable special ability which costs 3 MP to execute and allows the caster to deal dark hybrid damage (1.2x) and has a 30% chance of inflicting poison to a single enemy. Bedile learns Bio Blade at level 23 (4★).
The player may obtain the materia by crafting upon finding the recipe inside a Silver Chest in the Phantom Forest exploration. The required materials are as follows: Dark Cryst x1, Farplane Soul x1, Raptor Feather x1, Broken Blade x1, Alcryst x1; it costs 600 gil and takes 30 min to be completed.