1st - When dealing with outsiders, you can use your Knowledge: Planes in place of Diplomacy; when bribing or making deals with outsiders, you add your Tier as well to the Knowledge: Planes roll.
4th - You gain access to a small pool of Motes, equal to your Tier per day (minimum 1). You can spend one mote to add +1d4 to any skill check after you know the result, but the next time you use that skill you take a -1d4 penalty to the skill.
7th - When you score a critical hit, you can spend a mote to succeed at the confirmation roll.
10th - You know the ancient ritual to call the attention of the Dweller. The ritual requires spending an hour drawing arcane symbols on a doorway of at least small size; the more ornate the door, the quicker the connection. You can ask 3 questions of him, though the answer will most likely be cryptic. He tries his best to answer, and each question has a 75% chance of getting a true answer; you can increase this up to 90% by offering rare gifts or items. The chance of getting a true answer goes down by 20% each time beyond the first that this ability is used within a 7 day period.