Talk:The Spire of Crystalline Ambition/@comment-12.25.146.138-20130613200524/@comment-7310981-20130613201232

Yes, there is also an option that looks like a red portal. This will lead to you a phantom boss fight, you get dorri and some crystals (I've fought 2 of them and both times I've received 4 crystals). From the description, you cannot pass to the next level unless you defeat the boss.

The phantom bosses are treated almost exactly like a typical raid boss, where you can call for help if you need to. Though the old raid advantage cards do not seem to work for these fights (only the new ones from the pearl pack).