Sigil of Frailty 10% / 20% / 30% chance to cause vulnerability for 10 seconds on critical hit. (http://wiki.guildwars2.com/wiki/Sigil_of_Frailty)
Sigil of Strength 10% / 20% / 30% chance to apply might for 5 / 7 / 10 seconds on critical. (http://wiki.guildwars2.com/wiki/Sigil_of_Strength)
Wiki does not state if there are iternal CDs on those sigils. Are there?
Also, if anyone knows: what is the damage on Superior Sigils of Air and Fire procs?