Ark is a magic power that uses light particles, which is utilized by the Goddess Clan. It can be used in different ways: energy beams, explosions, solid energy blades, barriers, myriads of projectiles, golem etc. Highest-ranked goddesses, such as the Four Archangels, can use Ark on a massive scale.
The target is often enveloped in a sphere of dazzling light that suspends it between life and death and drains all of its magical energy, before shattering its bodies. It is mostly used to counteract darkness by disintegrating it, though it can also cause physical damage. It is highly effective against the Demon Clan and the Vampires due to their powers of darkness, more neutral yet strong to the other races while being least effective on other goddesses.
- Omega Ark「
極大聖櫃, Omega Āku」: By pointing their arms forward, both Tarmiel and Sariel create several gigantic Arks which can destroy multiple targets at once.
- Shunenbukaki Seijin「
執 念深き 聖人, Shūnenbukaki Seijin; literally meaning Spiteful Saint」: By doing a series of hand movements, Sariel and Tarmiel can create a large meteor shower of orbs to hit enemies with a barrage of attacks.
健やかなれ, Sukoyakanare」: By channelling her godly power, Elizabeth raises her arm and rapidly heals a target(s), counteracting negative effects such as strong corrosive substances or recover health and stamina, either for severe or minor damages. If not controlled enough, this healing power has the opposite effect on demons, hurting them and repelling their power. Her powers presumably render her immune to the effects of any poison, being completely unaffected by the Poison Snake Whip of the Assassin Knights of Malachia or Melascula's Deadly Poison. She initially lacked the ability to heal herself due to her empathy for others, but with the return of her memories, demonstrates the power to regenerate a cut inflicted by Chandler's Enkonjin and even a deep head wound from a Split Ball. After recovering her memories, she was able to counteract the effects of Melascula's poisonous acid instantaneously which even outspeed Ban's regenerative powers granted by the Fountain of Youth , Her healing abilities are able to restore King, Diane and Ban completely within seconds after being brutally wounded by Chandler and later allows her to restore the vitality of Escanor after being weakened by Meliodas' demonic miasma, as well as cure all the injuries, including broken bones and ripped open wounds, of a large number of people, even unbeknownst to them.
- Jonah no Junan「ヨナの
受難, Yona no Junan; literally meaning "Passion of Jonah"」: Elizabeth creates a giant basking shark with whale features made out of Ark to nullify Purgatory Flames or attack others through physical power. The name of this technique refers to the biblical figure of Jonah, who was swallowed by a big fish.
操, Sō」 & Burst「 烈, Retsu」: Elizabeth wraps the opponent in her Ark and shakes them across the battlefield to then detonate them in a big explosion.
- Enchantment: Ark「
付呪・ 聖櫃, Enchanto - Āku」: Elizabeth infuses Ark into a weapon.
- Saint Coat「
聖者の外套, Seinto Kōto」: Elizabeth surrounds herself with a magical barrier similar to Griamore's Perfect Shell, in order to resist the miasma of the Demon Realm.
- Combined Technique: Triple Prison「合技
三層牢獄, Gōgi "Toripuru Purizun"; literally meaning "Three-layer Prison"」: King combines Chastiefol's Pollen Garden with Merlin's Perfect Cube and Elizabeth's Ark to imprison the opponent in a three degree containment field. 
- Combined Technique: Kamigui「合技
神 喰い, Gōgi "Kamigui"; literally meaning "God Eater"」: After Elizabeth uses Enchantment: Ark in Lostvayne, Meliodas uses Kami Chigiri unleashing an Ark burst on the opponent.
- Kyusai no Ya「
救 済の 矢, Kyūsai no Ya; literally meaning "Arrow of Salvation"」: Mael fires a concentrated beam of Ark that pierces his opponents. It brings salvation through death on a demon, but makes others feel great pain when used on anyone who isn't a demon.
- Killing Saucer「キリング・ソーサー, Kiringu Sōsā」: Mael creates Ark blades in his hand that rotate at high speed which he uses to slice his enemies.
- Invigorate「健やかなれ, Sukoyakanare」: Upon rescuing Escanor from the Indura, Mael uses Ark to restores him, Howzer, Griamore, and Gilthunder in perfect condition with a single touch.
- Invigorate「健やかなれ, Sukoyakanare」: After being in a drunken state, Ludociel uses Ark as a form of healing to return himself to his normal state of mind, or to heal others.
聖域, Sankuchuari」: Using Ark, Ludociel creates a crystal-like octahedron used as a barrier to protect him and others from demonic energy.
- Gold Shining「
黄金の輝き, Gōrudo Shainingu」: Used in conjunction with his Grace, Ludociel obliterates the opponent with a star-shaped light blast.
- Ruby Shine「
輝閃, Rubī Shain; literally meaning "Shining Flash"」: Ludociel generates a blinding light to obstruct his opponents field of vision.
- Lightning Spree「
乱閃光, Raitoningu Supurī; literally meaning "Wild Flash"」: Ludociel creates multiple Goddess Clan symbols that shoots beams of light at his enemy.
- Sparking Drive「
狂える雷光, Supākingu Doraibu; literally meaning "Mad Lightning"」:: Ludociel creates a large Goddess Clan symbol and releases a burst of flames at his enemy.
- Twinkle Star「
星の瞬き, Tinkuru Sutā」: Tristan blast the opponent with an enormous Ark with the form of a cross star. 
- Heal Star「
癒やしの星, Hīru Sutā」: Tristan instantly heals and vanish pains from his targets. This power however does not work on curses nor illnesses.