
Originally Posted by
Niiro
The idea behind redundancy macros (for BRD in particular) is that Bloodletter's recast can be reset at random and you virtually always want to use it when it's up as it costs no TP and isn't tied to the GCD. Rather than placing it directly to the hotbar and have to constantly keep an eye out for when the recast resets you simply put it at the head of your general use WS macros, if the recast is up it'll fire instead of whatever WS is below it, if it's not then your regular WS will fire.
Likewise, Misery can only be used when the target's HP is below 20% (no TP cost, not tied to GCD) so instead of having to eyeball the mob's HP or the icon on the hotbar and hit a separate button when it's ready you simply put it at the head of your general use WS macro and it'll fire when it can, Misery is more damage than Bloodletter so you'd generally put it ahead of it.
edit: to be a little more clear, this macro
/micon "heavy shot"
/ac "misery's end" <t>
/ac "bloodletter" <t>
/ac "heavy shot" <t>
will appear on the hotbar as Heavy Shot with it's TP cost/recast displayed normally, when you hit this macro the game essentially does a series of checks. If Misery can be used (recast is up and target hp >20%), it will fire, if not then Bloodletter will be used if it's recast is up, if it's not, then Heavy Shot will fire.
Only 1 action will be performed per press as there are no /waits or anything, it's just a matter of priority from the top down.