For 1.3 Perama Caves, Scylax will try to locate auras (and their strength), as well as regios. He will try to take advantage of heights or other likely places. He can do this passively with Comprehend Magic, as well as actively and with more chance of success with Int Vim spont magic.
His InVi casting total is 17, so he can spont without spending Fatigue a 3: Base 1 R:P D:Mom T: Smell (+2). He will do this as mentioned above at likely spots, and open places when the wind is blowing towards him. He will say to the others he wishes to pray, perhaps winking at Arni.
#1He will do this for vis (Base 1 R:P D:Mom T: Smell (+2)); if he detects vis, he will also proceed to #2
#2For Magic and Faerie Auras at various spots (3: Base 1 R:P D:Mom T: Smell (+2)), must cast separately
•If he detects such an aura, he will attempt to use Comprehend Magic actively to locate it (only for Magic Auras/vis though). If CM does not work, or the aura is Faerie, then he will risk Fatigue to cast a InVi10 Base 2 R:P D:Conc T: Hearing; if successful, this will give Scylax its strength, and he should be able to locate it by Hearing.
•If he locates a Magic Aura, he will chance to spont a Regio detecting spell (10: Base 3 R:P D:Conc T: Smell (+2)) If there's a regio, he will immediately cast Piercing the Magic Veil InVi 20Mastery, using a Quiet/subtle Stifle the Spell(Vim) to avoid gestures and voice, to peer inside the regio and note its boundaries. He will note its location, but will not share such knowledge immediately. For a magic aura with no regio, he will enter it, unless it's hazardous or time consuming to do so, and invite Arni, sharing the information. If Perama is visible from this Aura, he will spont an InVi10 Base 2 R:P D:Mom T:Vision to note the strength of its inevitable Divine Aura.
•If he has detected vis, after this whole series of steps, he will proceed to look for it, unless it's hazardous or very time-consuming to do so, keeping in mind Anastaj's instructions of disturbing the least amount of things (Scylax's interpretation!), sharing such a find with Arni, and, depending on amount found, with the Covenant as a whole.
Only if he detects something of interest will he mark the spot in his rough map (a very basic affair, a general description of area, time of day).
This whole series of steps takes him just a few minutes or less, unless he needs to spend Fatigue, in which case about 6 -7 minutes, to recover.
IonianD: I understand this is a boatload of possible rolls, so I am fine if you just roll a couple and take it from there. On the other hand, this is the bread and butter of a Vim magus, and a Pralician even moreso, so this sort of search is central to Scylax and his usefulness to the Covenant. Since anyone can spont low level spells, Scylax is unconcerned if Arni witnesses his spellcasting. With higher level spells, he might be more secretive, or use his MuVi spells to conceal words and gestures. Hopefully in the near future he will get to know his sodales and strike friendships with them.