Rites Of Convocation Feat 4
Source Pathfinder Advanced Player's Guide
Your patron grants you the power to summon other creatures to aid you.
Choose one summon spell (such as Summon Animal, Summon Construct, and so forth) that appears on the spell list of your spellcasting tradition. You can spend 10 minutes in communion with your familiar to replace one spell you've prepared in one of your witch spell slots with the spell you chose, heightened to the same level.
The spell you replaced must be of at least the summon spell's minimum spell level.
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.
WitchThis indicates abilities from the witch class.