The mage can dispel any spell, regardless of what Arcana were used to create it — he does not need Prime ● or any other Arcana lore. The mage must first have Mage Sight so that he can perceive the spell to be affected.
Successes are compared to the target spell’s Potency. If they equal or exceed it, the spell is dispelled.
Guardians of the Veil Rote: Great Interdiction
To protect the Mysteries, the Guardians of the Veil are willing to employ even the most drastic measures. This rote destroys a spell utterly, and Sleepers who did not perceive it previously will never know it existed at all.
Free Council Rote (Unnamed)
Members of the Free Council are also known to use this rote to prove that the “tried and true” ways of magic are not quite as infallible as some would like to believe.