MiraMels
Explorer
1) Since the party has access to the Harper Teleportation Circle network, the Bard can probably teleport to a big city to get the paladin True Rezzed. Which of the locations is most likely to have a 17th Level cleric they can ask nicely?
Waterdeep could plausibly have a friendly cleric of that stature. What faith is the paladin? I don't have the whole city memorized, but I know Waterdeep does have big temples to Selune and Sune. Silverymoon is also big, established, and high magic enough to have a cleric of that level, but you'd have to hoof it from Everlund.