Divine Cloth Aries Mu used to be one of those units that did many things badly: he assisted, he shielded a bit, he controlled a bit, and he never had a real place in a lineup. His Awakened Cloth changes that completely: he is now one of the best protection units in the game.
The Rebirth does not add new mechanics, it makes what he already did finally matter. The Crystal Walls now absorb enough damage to be a real defensive tool, the shield covers the whole team and lasts long enough to survive the enemy burst, and when they break that protection Mu punishes them and re-applies it. The paralysis also stops being decorative, and instead of only blocking basic attacks it can take a unit out of the fight for a full turn. On top of that, the whole team gains a large damage reduction window.
In practice he is now the backbone of any tank or sustain composition, and a very good second support in teams that already play with shields. If you enjoy that style, he is one of the best investments you can make right now. If your account is aggressive and you never build defensive units, he is a nice addition but not a priority. And the good news is that he is cheap to enable: almost everything that matters is in his second skill, so he delivers with very little investment.
His synergies are direct: he multiplies the value of every other shield in the team, which is why he fits perfectly with Asmita, Pandora or Asgard. With one real attacker such as Thanatos or Yoma next to them, those lineups become extremely hard to break, and Mu is the piece that keeps everyone alive while they do the work. He is not a damage dealer, so building him as one is a waste of resources.
His only condition is that he must act: if the enemy controls him before his turn, none of that protection happens, and this meta is full of control (Camus Surplice, Seraphina, Krest). Persephone is also a natural counter, since her max-HP reduction weakens both his shields and his damage. Is he worth investing in? Yes, if you play defensive teams: this is one of those Rebirths that completely changes a unit, and it also leaves the account with a nice flat HP bonus in the temples.
