Runes of Sanctuary are either inconsistent, or their tooltip is incorrect:
Minor Rune of Sanctuary
(1): +10 Vitality
(2): +5% Boon Duration
Major Rune of Sanctuary
(1): +15 Vitality
(2): +10% Boon Duration
(3): +35 Vitality
(4): 3% Chance to gain retaliation for 10 seconds when hit.
Superior Rune of Sanctuary
(1): +25 Vitality
(2): +20% frozen duration
(3): +50 Vitality
(4): 5% Chance to gain retaliation for 10 seconds when hit.
(5): +90 Vitality
(6): You gain stability for 5 seconds when you fall below 20% health.
All other runes follow a pattern of increasingly improved (2) buffs, but Rune of Sanctuary switches to Frozen Duration strangely at tier 3. Is it possible to change the Superior rune to Boon Duration to be similar to the minor/major runes?