Essence of theHuman Grail

Upon drinking the wine from this Golden Chalice, the cup dissolves into light, entering your chest. With this Grail, unbound by the others like it Fate/Requiem in your heart, you gain access to the following:

• You are able to summon a single servant from the Nasuverse, who is "bound to your fate". This servant can be any that can be summoned in a normal Holy Grail War, and can be summoned at any time of your choosing. You can optionally chose to summon a servant that is the most compatible to you, leaving it somewhat random but won't leave you disappointed. No matter the servant that you summon, they will at least respect you as a master, not killing you on sight. A summoned servant will naturally draw magical energy from your grail in order to stay manifested in the world, and can use their noble phantasms several times with command spells before leaving you exhausted and drained. This means having a large enough amount of magical energy to sustain a servant normally, and with a few command seals, use their noble phantasms a few times before needed to recover your energy. As for the strength of your servant in question? It would be about normal, if it was summoned by a top tier Magus in a normal grail war.

• You are incapable and immune of dying from old age, or from sickness, but can still die by other means.

• You have access to "command spells" that can be used to change the physical age of your body. Command spells can also be used as a power source to cast basic magecraft, which you have basic knowledge of. These Command Spells are composed of a single interlinking pattern that fades on usage proportional to the amount of magical energy expended. These faded command spells will recover with time, courtesy of the Grail replenishing its magical energy. This process generally takes a few days depending on the amomunt of command seals expended.

• Optionally, you have something called Mystery due to the Grail in your body. This accumulates over time and grows stronger with as you age. The higher the mystery you have, the harder it will be for things with no or little mystery to affect you.

• Optionally, you may choose to summon a Servant that cannot be summoned in a normal Holy Grail War, such as the ones in the Grand Order. However, the strength of these servants would still be the same as if they were summoned in a normal Holy Grail War. This means that you could summon a pseudo-servant like Kama or Ishtar, despite them being a divine spirit inhabiting a host body. They cannot be "upgraded/ascend" like the servants in the Grand Order can however. Specific servants that are tied together like Castor and Pollux can be summoned as normal.

• Optionally, you can add "modifiers" to your Servant when summoned, such as them being summoned as a summer variant, bride, alter, mechanical, etc.

• Optionally, you may choose to have the "original form" of your Servant that would normally be stored in the Throne of Heroes, be stored in your Grail. This means that if your Servant dies, you can re-summon them with enough magical energy. They will have the memories that previous version did.

• Optionally, when you dream, you can choose to enter the Grail in your heart where the original form of your Servant is. This space is a representation of the place that the heroic spirit is most comfortable in, and is where you can deepen the bond with your Servant through interaction. This will strengthen their manifested servant self the stronger bond you have with their original form.

• Optionally, you can only more than "one" servant at a time if your servant is eligible for multiple classes. Having more than one servant out will drain your magical energy faster with the more out. This means that attempting to have every version of Artoria Pendragon summoned will drain your magical energy like crazy and will kill you if you can't produce enough to sustain them.

• Optionally, you can arrive in any of the various timelines or singularities in the Nasuverse, whether as a drop-in or reincarnate. Naturally, you can choose the time and place, with the circumstances of your birth up to your decision.