Infinite Possibilities Feat 18
Source Pathfinder Core Rulebook
You've found a way to prepare a spell slot that exists in your mind as many different possibilities at once. Once during your daily preparations, you can use a spell slot to hold that infinite potential, rather than using it to prepare a spell. You can use this spell slot to cast any spell from your spellbook that's at least 2 levels lower than the slot you designate; the spell acts in all ways as a spell of 2 levels lower. You don't have any particular spell prepared in that slot until you cast it.
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.
WizardThis indicates abilities from the wizard class.