You can find the action Limit Break in your “Actions & Traits” window, under “General”.
Generally speaking, Limit Break is saved for the last boss for the DPS to use when the boss hits 10% health. This changes as you get further into trials / dungeons / etc. There are unique trials that require the use of LB3 by specific roles in certain circumstances.
If you die in battle…
You can find most interrupts in your “Actions & Traits” window under the section “Role”
You have to test to find out which stuns / interrupts work. General rule of thumb, is the left castbar can be stunned or interrupted, and the right may be stunable.
|Interruptable||This may be stunnable|
|Interrupt Icon||Name||Role that uses it||What it does|
|Leg Sweep||NIN, DRG, MNK, SAM||Stuns|
|Head Graze||BRD, MCH, DNC||Spell Interrupt|
|Low Blow||DRK, PLD, WAR, GNB||Stuns|
|Interject||DRK, PLD, WAR, GNB||Spell Interrupt|
|Shield Bash||PLD||Stun: It requires planning as it is on the GCD|
|Repose||WHM, SCH, AST||Sleep (counts as a stun): but requires cast time or Swiftcast; rarely used in dungeons, trials, etc|
|Sleep||BLM||Sleep (counts as a stun): requires cast time or Swiftcast; rarely used in dungeons, trials, etc|
These will heal you and/or reduce damage taken!
|Heals those in it||Heals / Mitigates||Heals / Does Damage||Heals / Mitigates|
These do damage to enemies when they stand in it!
|Does damage to targets in it||Does damage to targets in it||Does damage to targets in it|