Vortex is a boss, but it's only a little stronger than monsters around here.
Vortex can cast Confuse or Silence to make the battle harder. Also, Vortex loves using Water either on one or all allies. Remember, the characters have to fight three of them at the same time. Still, this is not a difficult fight. Having a Mage to cast Cura on the party, a Summoner (Dimensions) to strike Judgment Bolt or even better Diamond Dust and all other members to attack continuously is what it takes to defeat three of them.
vortex is a region within a fluid where the flow is mostly a spinning motion about an imaginary axis, straight or curved.In fluid dynamics, a