Inscrutable Quantum Device:
under effect of Crowd Control: removes it
Under effect of bloodlust and similar: highest stats buff
low health unit or low mana healer is in range: restores health/mana to a unit (no idea for priority)
dead tank is in range: summons taunting hologram
20% and lower health hostile target: fires damaging spell to it (seems to still give a buff if used on neutral target, but trigger don't have a check for that)
noting else above: random secondary stats buff from two highest
(% of stat gain might display wrong after 1st login (tooltip value isn't read correctly). ReloadUI once to fix that)
Weakaura:
Displays cooldown for the trinket: desaturated when on CD and not buffed / colored glow when ready to use
Shows text with effect from the list above this trinket will provide on use when it's ready (stats buff will display avg. % gained. Diminishing is not calculated so it varries by ±1%)
Shows text history of last use if enabled in custom options
todo:
-add SPELL_HEAL_ABSORBED when WA allows me to
-check performance in raid