Shockwave Pulsar

Shockwave Pulsar is Quistis's ultimate Blue Magic spell in Final Fantasy VIII. The spell shows orbs lifting all enemies into a cloud covered sky and a giant explosion engulfing them all, dealing critical damage that may exceed the 9,999 limit. One of the final bosses, Griever, uses Shockwave Pulsar as its greatest attack.

Acquiring
Shockwave Pulsar can be learned from the Dark Matter that can be acquired by refining 100 Curse Spikes with the Tool-RF ability. However, in the PlayStation version, Siren must be at Level 100 for it to work (PC version of the game does not require GF Siren to be level 100). The only other way is through the Pocket Station game Chocobo World.

The easiest way to collect 100 Curse Spikes is in the area with a Save Point in Deep Sea Research Center that spawns only Tri-Faces. They also give plenty of EXP for Siren to level up if she is not Level 100 already. Junctioning Siren as someone's sole GF allows her to get the entire EXP load after battle.

Power
Shockwave Pulsar starts with a magic power of 150 at Crisis Level 1, and reaches 250 at Level 4.

The formula, therefore, for the spell to deal maximum damage is as follows:
 * $$[[[Mag + SpellPower] * [265 - Spr] / 4] * SpellPower] / 256>$$

If the opponent's Spirit is at 0, and Shockwave Pulsar is at its maximum magic power, it can potentially inflict up to 32,672 damage.

Dissidia Final Fantasy
Shockwave Pulsar also appears in Dissidia Final Fantasy as an HP attack for Ultimecia. By holding, Ultimecia charges an orb that is released in an arc and explodes on impact. It requires 40 CP to equip and costs 180 AP to master.

Dissidia 012 Final Fantasy
Shockwave Pulsar returns as one of Ultimecia's HP attacks. Its properties were changed; the orb has been modified to remain in place for a few seconds before detonating, with a vacuum effect to pull the opponent closer. It now requires 30 CP to equip and 130 AP to master.