Spoiler: Sidebar: Magical Interaction
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Binders interact with their vestiges through the Weave, but bind to them by sharing their very soul. Therefore, only some powers and abilities offered by binding a vestige are subject to interaction with effects like antimagic field and dispel magic.
In an area of an antimagic field, all features of your minor spirits and vestiges, except for Bonus Proficiencies, your Physical Signs, and Influence, are suppressed. The spells offered to you by vestiges can be dispelled and counterspelled as normal, but the vestiges themselves are too powerful to be dispelled in this manner.
Spoiler: Changelog
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6/3/16: Sealed Fate: Patron Vestige: Clarification added
Gustling: Ranged spell attack required
Otiax: Fog Hammer: Opp attacks are against targets within 5 feet
Acererak: Undead Healing: Any source other than cantirips
Geryon: Acidic Gaze: Action to use
Kas: Black Blade: Clarification on adding Charisma modifier twice
Tenebrous: Grave Darkness: Effects only affect creatures you choose. Your summoned undead can see in darkness.
Exorcist: Only disables binders for 1 minute
Teeth of Dahlver-Nar: Savnok: mage armor instead of shield
6/4/16: Ronove: Ronove's Fists: Reworded to state that you use your binder level as a monk level for unarmed strikes, and that, if you multiclass, your effective level is binder + monk'
Karsus: Null Magic: Rephrased
Otiax: Obscuring Mist: Bonus action to cast
Feat: Exorcism: Target is immune to exorcism attempts for 24 hours on a success
Magical Interaction Sidebar: Added
6/26/16: Suppress Sign: Moved to subpoint under Pact Magic, no longer in table
Minor Spirits: Now uses consistent wording for cantrips
Patron's Aegis: 5 + binder level, not Charisma score
Amon: Amon's Horns: Typo fixed
Dahlver-Nar: Share Harm: Reworded
Ronove: Far Hand: 'You' make a Charisma check, not the hand
Aym: Golden Halo: Duration fixed
8/21/16: Quick Build: Edited to better represent a successful Binder stat array
Minor Spirit: Ghost: Specifies ranged spell attack roll
Naberius: Noble Bloodhound: Feature added; was missing in the PDF
Aym: Golden Halo: Reworded
Tenebrous Domain: Spells: Typo on 'destructive wave'
Cards: Changes made to Savnok, Tenebrous, and Halphax