Vitality Vial

The Vitality Vial is an Unversed found in Kingdom Hearts Birth by Sleep Final Mix. The player can transform into this Unversed using the exclusive Illusion-V command.

Design
A Vitality Vial's shape resembles that of an hourglass-shaped. It has a turquoise body, which fades to yellow towards its base. Its spherical head has two fin-like protrusions poking out from either side of it. Above its red eyes, which are set in a happy expression, is a triangular, pale gold-colored highlight. Above its head is a noticeably thinner "neck", with a pale gold rim. Its "lid" is turquoise with a pale gold highlight and is topped by a large, light blue gem.

The Vitality Vial's Japanese name alludes to its appearance, and the goal of the Battle Mission it appears in: to survive for as long as possible. Its English name alludes to the HP clouds that it releases whenever it is attacked.

Strategy
The Vitality Vial can be found exclusively in the Dwarf Woodlands. To begin, stock the protagonist's deck full with Curaga commands. Fully leveling up Curaga will increase the amount of HP restored, so consider stocking the protagonist's deck with maximum-level Curaga commands. The effects of the Curaga command are a bit more predictable. Make sure the protagonist has fully leveled up Magic Haste before proceeding, as the encounter with the Vitality Vial is far more survivable this way. Heal Strike is an ideal finisher to equip; not only does it heal the protagonist, but it also renders them invincible.

The Vitality Vial will begin by using Draining Mist; it will fill the area with a poisonous mist. This poisonous mist will chop off a fraction of the protagonist's HP every second. If the protagonist's HP is depleted, the mini-game is ended, but it does not count as a Game Over.

Attacking the Vitality Vial will release clouds of HP, as the report says. While the protagonist can choose to attack the Vial, he/she may run the risk of losing more HP if the Vitality Vial chooses to attack.

Terra and Aqua can confront this Unversed in the Underground Waterway.
 * Terra and Aqua

When playing as Terra, a notable strategy is to use Air Slide and Sonic Impact to catch up to the Vitality Vial, damage it, and heal him. However, Sonic Impact counts as a combo finisher, so the Vitality Vial may warp after Sonic Impact connects. Similarly, when playing as Aqua, equip Ice Slide and Firewheel to damage the Vial.

A foolproof strategy is to attack the cog in the area to open the gate and hide from the Vial. The Vitality Vial will never enter the gate, leaving Terra or Aqua free to survive as long as they can by periodically casting Curaga when their HP is low.

Ventus can find the Vitality Vial in the Mine, the same place where he first attacked the dwarfs.
 * Ventus

Unlike Terra and Aqua, Ventus has nowhere to hide from the Vial. To survive, attack the Vial with combos, Fire Glide, or Thunder Roll, or get away as far as possible from the Vial before healing.