Magnum Opus Feature 19
You have tuned your spellcasting to the highest caliber. Add two common 10th-level occult spells to your repertoire. You gain a single 10th-level spell slot you can use to cast one of those two spells using bard spellcasting. You don't gain more 10th-level spells as you level up, unlike other spell slots, and you can't use 10th-level slots with abilities that give you more spell slots or that let you cast spells without expending spell slots.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
BardThis indicates abilities from the bard class.