Guild Wars 2

Sigil of Endurance
Minor: 10% chance to gain 10 endurance on critical hit
Major: 15% Chance to gain 10 endurance on critical hit (Cooldown 2 seconds)
Superior: 20% chance to gain 10 endurance on critical hit(Cooldown 3 seconds)

Sigil of the corrupted(includes any minions associated with the elder dragons)
Minor: 5% dmg to dragon minions
Major 10% dmg to dragon minions
Superior: 15% dmg to dragon minions

Sigil of Cover (all protection durations are 5 seconds)
Minor: Grant protection when you swap to this weapon in combat. Cooldown 30 seconds
Major: Grant protection when you swap to this weapon in combat. Cooldown 22 seconds
Superior: Grant protection when you swap to this weapon in combat. Cooldown 15 seconds.

Sigil of determination
Minor: Crit dmg increased 3%
Major: Crit dmg increased 4%
Superior: Crit dmg increased 5%