As a Bonus Action, you can unleash your inner magic for 1 minute. While active, you have Advantage on the attack rolls of Sorcerer spells you cast, and once on each of your turns when you cast a Sorcerer spell using a spell slot, you can cause one target of that spell to take extra damage equal to your Proficiency Bonus. You can use this feature twice per Long Rest.

When you cast a spell with a duration of at least 1 minute, you can spend Sorcery Points to change its damage type to cold or to gain another approved Metamagic benefit, according to the chosen option.

You can cast a spell without displaying obvious verbal or somatic components, making it difficult for others to identify that you are casting.

You can cast sorcerer spells using Charisma as your spellcasting ability. You can use an arcane focus or a component pouch when required, and you can cast spells without material components that lack a listed cost or consumption.

You gain 2 Sorcery Points, which you can spend on Metamagic options. You regain all expended Sorcery Points when you finish a Long Rest.

You gain the Careful Spell and Subtle Spell Metamagic options. You can use only one Metamagic option on a spell unless the option says otherwise. You gain an additional Metamagic option at level 10 and another at level 17.

You choose a draconic ancestor, selecting silver dragons as the source of your magic. You gain the Draconic language, and your magic is associated with cold damage.

Your Hit Point maximum increases by 5. When you are not wearing armor, your base Armor Class is 10 plus your Dexterity modifier plus your Charisma modifier.

You gain the Ability Score Improvement feature. Harmony has no score increase remaining to apply under the specified final ability scores, so this feature is retained as an available advancement feature rather than changing the provided scores.

You regain 1 expended Sorcery Point whenever you finish a Short Rest.

You have studied extensively and know how to find and interpret information. If you do not know a piece of lore, you usually know where and from whom that information can be obtained. You are also able to communicate with scholars, scribes, and learned communities in ways that open doors ordinary travelers might not reach.