Sigils
The sigil will proc, the cool down is on each enemy not on the sigil so if your staff is hitting 5 players thats 5 chances to proc this aoe heal.
Wait, what? The Sigil itself NEVER goes on Cooldown?
Bakuon/Bakuon Thief [MAS]/ ex-[ATac]
No, I don’t think so. Doesn’t trigger often enough to have a per-target timer.