Crusade Architect Silas is a level 80 forsaken quest giver that appears in the Valley of Echoes in Icecrown[83, 73] during a few quests.
- Crusade Engineer Spitzpatrick says: Dying must have completely destroyed your ability to preform simple arithmetic. Can't you see that there is no way you're going to make that structure's layout work? It'll collapse!
- Crusade Architect Silas says: How dare you! I am the chief architect here and I make the final call on layouts! If you have a problem with my plans, feel free to file a grievance with Highlord Fordring. Now if you don't mind, I have work to attend!
- After a player completes  The Last Line Of Defense, Crusade Architect Silas will phase in to existence for that player.
- After a player completes  The Battle For Crusaders' Pinnacle, Crusade Architect Silas will phase out of existence for that player and will no longer be available.