Ars Magica 2 allows the player to acquire partners thought the use of a Summon or Charm spell, or by befriending a Light Mage - if the Mage Posse talent is unlocked. The amount of partners a player can have is normally limited to one (Most likely for balance and stability).
Arcane Compendium· Crystal Phylactery· White Chalk· Blue Chalk· Red Chalk· Keystone· Lightning Charm· Life Ward· Mana Cake· Player Journals· Spell Parchment· Warding Candles· Wizard's Chalk· Workbench Grid Upgrade
Air· Arcane· Earth· Ender· Fire· Ice· Life· Lightning· Nature· Water
Hell Cow's Horn· Nature's Scythe· Winter's Grasp
Ender Boots· Magitech Goggles
Circlet· Armor· Leggings· Boots
Antenna of the Fire Guardian· Earth Armor· Water Orbs
Sigil Stand· Sigil of Gentle Rains· Sigil of Nature's Bounty· Sigil of The Felled Oak· Sigil of The Flat Lands· Sigil of Butchery· Sigil of Progeny· Sigil of Containment· Sigil of Interdiction· Sigil of The Light· Sigil of The Lunar Tides· Sigil of The Packed Earth