Night Fae
Benedizione delle Stagioni is an ability that buffs a friendly target, rotating through the four seasons as you use it:
Benedizione dell'Estate,
Benedizione dell'Autunno,
Benedizione dell'Inverno, and
Benedizione della Primavera. In addition to providing a decent damage buff from
Benedizione dell'Estate, it's an ability with decent utility as it can also be strong to help out a healer if necessary with
Benedizione della Primavera.
Benedizione dell'Estate doesn't quite end up lining up with Ret's cooldowns very well since it ends up being a 3 minute period between any specific season before you're able to cast it again - since you need to wait through four 45 second cooldowns for each season - and Ret's biggest damage cooldown,
Ira Vendicatrice, is a 2 minute cooldown. (Even if this period is reduced by
Benedizione dell'Autunno,
Ira Vendicatrice's cooldown is reduced at the same rate so there ends up being the same gap between the cooldowns either way.) However, you are able to use it to buff another player's damage instead if they have cooldowns available at the time, which mitigates the awkward cooldown timing a little bit. It's also important to note that while
Benedizione dell'Estate does Holy damage it doesn't actually get buffed by Ret's
Maestria: Imposizione della Luce, so there's no downside to using it on whoever will do the most damage during its duration anyway. The potency conduit for Night Fae,
Lunga Estate, increases the duration of
Benedizione dell'Estate.
Animorfosi teleports you forward a small distance and increases your movement speed for 12 seconds, but using most abilities will cancel the
Animorfosi form. This is still a powerful option to have for Retribution, since our only baseline mobility option is Divine Steed, and there have been significant mobility issues for the spec since the dedicated mobility talent row disappeared at the beginning of Legion.
Venthyr
Santificazione Cinerea is a targeted ground effect that does ticking damage to enemies inside over 30 seconds, allows
Martello dell'Ira to be cast while standing in it regardless of the target's health, and buffs
Martello dell'Ira's damage. With
Santificazione Cinerea having a long duration for an unmovable ground effect there can be situations where enemies are moved out of (or die) before the full duration is up, and its 4 minute cooldown can make it very costly if it's used in a situation where you can't get full damage out of it. However, the ability is still numerically very strong and it scales reasonably well with extra targets, although its ticking damage is reduced past 5 targets. Venthyr's potency conduit,
Discernimento Benedetto, increases its ticking damage on the lowest health target.
Porta delle Ombre is a 1.5 second cast that teleports you up to 35 yards at a targeted location. Similarly to
Animorfosi, any ability that offers additional mobility to Retribution is likely to be a strong choice for any PvE content due to the lack of options for the spec otherwise. Although its cast time is a drawback, in most situations you'll need to use it you will be able to adequately prepare and start casting it early if you know you'll need to use it for a specific mechanic.
Kyrian
Rintocco Divino is a 1 minute cooldown that casts
Giudizio on up to 5 targets within range. The
Giudizios cast do double their normal damage, the
Giudizio debuff is applied to any enemies hit, and you gain 1 Holy Power for each
Giudizio cast as normal. The baseline single target damage for this ability is pretty weak relative to the other covenants, but it improves significantly with the Kyrian potency conduit,
Lucidità Risonante, which provides a chance for it to cast its empowered
Giudizio four times on your primary target instead of once. For AoE situations, the strength of
Rintocco Divino scales well with additional targets up to 5 since you not only gain more damage from each additional
Giudizio, but also gain more Holy Power.
Evocazione: Factotum summons an NPC who gives you a
Fiala della Serenità, which can be used to heal you and removes most diseases, poisons, curses, and bleed effects. Although there may be situations where being able to remove curses is valuable, Retribution can already remove any diseases and poisons with
Purificazione dalle Tossine and bleed effects with
Benedizione della Protezione. There's also many tools Ret can use for self-healing, including talents like
Guaritore Altruista, which makes the healing portion of the ability less impactful as well. Overall it's better than nothing, but Ret stands to gain very little from
Fiala della Serenità when most of the utility it provides already exists as options for the spec.
Necrolord
Martello del Dominatore is a single target damage ability that empowers your next
Verdetto dei Templari to also cast a free
Tempesta Divina. It has a 30 second cooldown and as of a recent change no longer costs any Holy Power. The damage the ability provides isn't particularly good on full AoE when compared to other covenant options, but it's worth noting that it does still perform alright in situations where a primary target needs to be focused down but incidental cleave on other enemies is still valuable.
Vigore Virtuoso increases the initial damage dealt and also heals you for the damage done.
Forgiatura della Carne is a channeled ability that creates an absorb shield for up to 20% of your health depending on the duration channeled, or up to 50% if there's a corpse nearby. Due to the fact that Retribution already has a 20% absorb as part of its defensive toolkit in
Scudo della Vendetta, that doesn't also require a 4 second channel to use, this ability is unlikely to be very impactful for most content although there could be niche situations it has an impact. In most circumstances though, it doesn't compare very favorably to the other covenant's signature abilities.