Its strong. Very strong. I can see them nerfing it in the future because its a keystone that does so may useful things and it benifits more then just tanks.
Been ignited? Cc the enemy and dont worry about it.
Got caught by the enemy team doing a bad play? Just CC one of them and soak up the damage as you make your escape.
Win a 1v1 easily because you have a shield to go with your CC.
Trading damage is now harder vs opponents with CC.
Im gonna be totally real here.
benefits from this keystone the most she has alot of CC and now she has survivability.
Imo tldr. Its to strong and needs nerfs.