Attack imbuements (fire, earth, ice, energy, death, life leech, mana leech, critical hit): Do these only tick down when you attack something? How about if something is attacking you?
Protective Imbuements (death, earth, fire, ice, energy, holy, paralysis): Do these only tick down when something is attacking you? How about if you're attacking something?
Support imbuements (speed, cap): This ticks down as long as you have the boots or backpack equipt.
Skill improving Imbuements (axe, sword, club, distance, shielding, magic level): Do these only tick down when you attack something? How about if something is attacking you?