Domain Expansion

Barrier: Create a near impenetrable barrier that surrounds the caster. Any creatures inside not touching the caster will be targeted by the domains effects. Any creature inside or outside the domain that wishes to break the barrier must make a strength check against your Spell Save DC +10 (This number increases to 20 with Perfect Domains and Open Barrier Domains). If they succeed the length of your domains uptime decreases by 1 round.

Sure Hit Effect: Any creature that is being targeted within the domain will ALWAYS be hit by the spells imbued in the domain at the start of the round and when the domain is initially cast. Any creature being targeted by the domain are targeted simultaneously and separately by the imbued spells. The only way to avoid the sure hit effect of the domain is to have legendary resistance against the imbued spell(s) or to use spells like dispel magic or counterspell as a reaction to the initial casting of the domain. (This only works the first turn the domain is opened)

Attack Advantage: While the domain is cast you have advantage for all ability checks, saving throws, and skill checks. Damaging spells have their damage dice increased by 1. Any spell with certain conditions that inhibit the use of spell are negated. (Ex. Command spell can be multiple words instead of one word)

Spell Imbuing: All Domains can be imbued with a spell or magical effect that is triggered automatically at the start of every round including the round when the domain is cast. The type of barrier that is cast will determine how many spells can be imbued into the domain. A spell can be chosen multiple times and if it is a levelled spell then the spell slot used to imbue it defines at what level it is imbued at. The domain casts the spells in the order in which they are imbued, this means that the domain will cast the spells in multiple separate attacks. 

Barrier Creation: The type of barrier that is formed is dependent on the hit dice rolled before the domain is cast. The stronger the barrier rolled the more spells that can be imbued into it after the domain is cast. Below is a list of the type of domains that can be cast.

• When a 1 is rolled
  • Incomplete Domain, any creature caught within this domain can make a Dexterity saving throw against your spell modifier if the creature succeeds it can successfully escape your domain. This type of domain can only be imbued by one spell.
• When a 2 - 9 is rolled
  • Full Barrier Domain, with an action you expand a full barrier 25ft around you and any creature within the 25ft will not be able to escape the initial casting of the domain. Any creatures on the edge of the domain can make a Dexterity saving throw against your spell modifier if the creature fails you decide whether it will be in the domain or not if the creature succeeds it can chose whether it wants to be inside the domain or outside the domain. This type of domain can be imbued by two spells.
• When a 10 - 15 is rolled
  • Complete Domain, with an action you expand a full domain 60ft or less around you, you may adjust its size. Any creatures on the edge of the domain can make a Dexterity saving throw against your spell modifier + 5 if the creature fails you decide whether it will be in the domain or not if the creature succeeds it can chose whether it wants to be inside the domain or outside the domain. This type of domain can be imbued by four spells.
• When a 16 - 19 is rolled
  • Perfect Domain, with an action you expand a perfect domain 200ft or less around you, you may adjust its size. Any creatures on the edge of the domain can make a Dexterity saving throw against your spell modifier + 10 if the creature fails you decide whether it will be in the domain or not if the creature succeeds it can chose whether it wants to be inside the domain or outside the domain. This type of domain can be imbued by 6 spells.
• When a natural 20 is rolled
  • Open Barrier Domain,  you cast a domain without a barrier, it is akin to painting on air instead of a canvas and is remarked as divine, even by the standards of domains. With an action you expand a domain having it expand up to 550ft or less around you, you may adjust its size. Creatures at the edge of your domain are considered to be within your domain as well as creatures up to 1000 feet above your domain in a cylindrical shape. This type of domain can be imbued with 8 spells. 
  • The domain has a central structure measuring 10-20 feet in diameter. The focus has an AC of 14 and twice your hit points and a Damage Reduction of 3. It is resistant to all types of damage except force to which it is vulnerable. As long as this focus exists the domain will continue to function. You no longer need to concentrate on the domain or on spells as the focus does it for you.