Will Transmog Work on Exotics?

What is Eligible for Transmog? Before you ask, no you cannot turn exotics into a universal ornament. Bungie says this isn't a thing because it would create issues in Crucible where you can visually see what your opponents are using. Everything else including commons, uncommons, and rares is fair game, however.

Can you Transmog exotic armor?

Exotic armor, unsurprisingly, cannot have the look of a different piece of armor. ... Due to "technical constraints", you won't be able to transmog Year 1 Armor Ornaments for Vanguard, Crucible, Iron Banner, Faction Rallies, Prestige Raids, or Trials of the Nine armor - but Bungie is working on a solution.

Do Universal ornaments work on exotics?

Exotic weapons and armour do not allow 'universal' ornaments for the express purpose of not covering up what exotic it is. Weapons retain the profile and structure of the weapon, and armour similarly. It's intended for readability and transparency of player loadouts.