In battle, Mage spells, Ninjitsu, Blood Pacts, and Songs can be used at the end of a skillchain to add additional damage or stregthen a status effect on the enemy. This action is called a Magic Burst. In order to create a Magic Burst, the element of the spell must match the element of the skillchain. The spell must finish casting within 5 seconds of the Skill Chain animation to produce a Magic Burst.
Mages can magic burst in between two skillchains or at the end of a skillchain (which must involve two or more Weapon Skills). To Magic Burst(MB) in between skillchains the spell must be completed after the first skillchain has been made, and before the next weapon skill is activated.
More than one magic burst can happen at the same time (i.e. two different people can cast two different spells, as long both spells are the correct elemental type). They will not interfere with each other. Mages can also magic burst a skillchain that they helped create. Dark Knights, Paladins, and Ninjas can do this as well.
With very careful timing, a Mage can MB twice on the same skillchain if their second spell casts very quickly. White Mages can double-burst Light with Banish III and Holy, and Red Mages can easily double-burst or higher during Chainspell.
Since the Dec. 9, 2004 update, Summoners now have the ability to have certain of their Avatar's Blood Pacts act as a Magic Burst. Like above, the Blood Pact must be executed after the Skillchain animation and within 5 seconds afterwards. The Avatar's element must match the skillchain element to Magic Burst.
The same update also allowed Wyvern breath attacks to Magic Burst.
Effects of a magic burst
- The update notes say that Wyvern Magic Bursts only give a Magic Accuracy bonus, but Blood Pact Magic Bursts give a damage bonus and an accuracy bonus.
Type of spell to burst
Lv. 1 skillchains
Liquefaction - burst Fire based spells.
Induration - burst Ice based spells.
Detonation - burst Wind based spells.
Scission - burst Earth based spells.
Impaction - burst Lightning based spells.
Reverberation - burst Water based spells.
Transfixion - burst Light based spells.
Compression - burst Dark based spells.
Lv. 2 skillchains
Fusion - burst Fire and Light based spells.
Fragmentation- burst Lightning and Wind based spells.
Distortion - burst Water and Ice based spells.
Gravitation - burst Earth and Dark based spells.
Lv. 3 skillchains
Light - burst Fire, Light, Lightning, and Wind based spells.
Darkness - burst Water, Ice, Earth, and Dark based spells.