Chaos Tide

The Sea of Life (生命の海, Seimei no Umi, localized as "Primordial Sea") is a Personal Skill that expresses the Divine Authority of the 2nd Beast as "the Sea From Which Life Itself is Sprung" (命を産む海, Inochi wo Umu Umi). Being that the Sea cycles the True Ether of the Genesis of Earth (地球創世記, Chikyuu Souseiki), the supply of Magical Energy available to the 2nd Beast's Magical Energy Reactor (魔力炉心, Maryoku Roshin) is within the boundaries of the domain, unlimited. The movement by which the Sea of Life extends its domain is referred to as the Chaos Tide (ケイオスタイド, Keiosu Taido).

he substance of the Sea of Life is a Black Mud (黒い泥, Kuroi Doro ) that acts to pollute Saint Graphs (霊基, Reiki, lit. "Spiritual Foundation"), fundamentally remaking any organism that enters unto the Sea a "Child of Tiamat" that bears an arbitrary selection of the following skills: Self-Modification (自己改造, Jiko Kaizou ), Environmental Modification (生態変化, Seitai Henka , lit. "modification of environment / ecology"), Environmental Fusion (生態融合, Seitai Yuugou , lit. "fusion unto environment / ecology"), and Unit Mitosis (個体増殖, Kotai Zoushoku , lit. "Reproduction of Individual Entities"). Upon emergence from the Mud, the Children of Tiamat are imposed with a cellular-level Geis — a Nitrogenous Base Contract (塩基契約, Enki-Keiyaku ) — automatically rendering them as enemies of Man. Servants are no exception to the process.

In the 7th Singularity of Fate/Grand Order, Kingu refers to the Sea as the Primordial Organism (原初の生命, Gensho no Seimei, lit. "the first life") and the Sea of Chaos (混沌の海, Konton no Umi ) -- further stating that, amongst practitioners of Magecraft, the Black Mud is the substance referred to as the Mud of the Grail (聖杯の泥, Seihai no Doro ).