In the mail, fifth-year characters will nab an experience scroll granting any toon an instant boost to level 50 (following the annual pattern), two birthday booster buffs, five teleport-to-friend tokens, one dye kit (exuberant), one card granting 5000 karma, and the “Relentless” title. That’s a per-character bonus, so if you’re sitting on a bunch of old toons, hooray for you.
Once per account, you’ll get a separate anniversary chest that bequeaths your choice of anniversary backpack (same as last year), a guaranteed wardrobe unlock (I got a dye, sigh), two anniversary weapon packs (they’re the gorgeous glowly Luminous weapons), and the “Anniversary Lounge Choosy Box,” which grants you your choice of a two-week pass to the Captain’s Airship, Royal Terrace, or Mistlock Sanctuary.
Happy birthday, Guild Wars 2!