Just do Rival Wings/Frontlines lol, 7 tomes just for playing plus 10 tomes for winning or 6 tomes on defeat for a match that on average lasts 10 minutes vs going through a 45 minute cutscene simulator for only 20 tomes.

Not only that but you'll also earn wolf marks for unique PvP glamours, mounts, emotes and hairstyles as well. Sounds like an easy choice for me.