Bio Barrage

Bio Barrage is a Shotlock in Kingdom Hearts Birth by Sleep that can be used by Aqua, Terra, and Ventus. It can be unlocked for purchase in the Mirage Arena by reaching Level 15 and purchasing it for 2500 Medals or created through Command Meld, but there's only a 5% chance of making it. It is one of the more powerful Shotlocks with a max lock of 8. Launch a salvo of projectiles that poison (50% chance) targets, extra attacks: Perform a well-timed button press to fir additional blobs (based on your timing rating).

Etymology
Bio is a Black Magic type Spell used in the Final Fantasy series, Bio is used to inflict the Poison status on Enemies.