Для своей кампании по Глубоководью для персонажа волшебника вместе с игроком переделали архетип Loremaster-а из Unearthed Arcana сделав его более сбалансированным за счет применения существующих механик.

Lore Master. Starting at 2nd level, you become a compendium of knowledge on a vast array of topics. You become proficient in your choice of two of the following skills: Arcana, History, Nature, or Religion.
Your proficiency bonus is doubled for any ability check you make that uses either of those skills.
In addition, your analytical abilities are so well-honed that your initiative in combat can be driven by mental agility, rather than physical agility. When you roll initiative, it is either an Intelligence check or a Dexterity check for you (your choice). Lore Master.

Spell Secrets. At 2nd level, you master the first in a series of arcane secrets uncovered by your extensive studies.
When you prepare a spell with a spell slot and the spell deals acid, cold, fire, lightning, necrotic, radiant, or thunder damage, you can substitute that damage type with one other type from that list (you can change only one damage type per casting of a spell). You replace one energy type for another by altering the spell’s formula as you prepare it.
When you cast a spell with a spell slot and the spell requires a saving throw, you can change the saving throw from one ability score to another of your choice. Once you change a saving throw in this way, you can’t do so again until you finish a short or long rest. Spell Secrets.

Metamagic. On 6th level you can use metamagic to further enhance your spells. You have a number of sorcery points equal to half of your level (rounded up). You can never have more sorcery points than that. You regain all spent sorcery points when you finish a Long Rest.
Converting a Spell Slot to Sorcery Points. As a Bonus Action on Your Turn, you can expend one spell slot and gain a number of sorcery points equal to the slot’s level. Metamagic.

Свойства архетипа для 10-ого и 14-ого уровней пока не прописывали в виду неактуальности для кампании.