Explosion is an ability available in Kingdom Hearts 2.
When eqipped, Explosion acts as a ground combo finisher (if no magical attack is selected beforehand), setting up a circular field of energy on the ground which acts as a guide for four magic orbs. These orbs inflict 4x damage and repel the enemy; the repel causes a maximum of 2x damage. It's strength is determined by your magic value, unlike other combo finishers. Explosion is a non-elemental attack.
It costs 3 AP.