Builds for Morgan

Depends on what you need, since both builds are great.

If your comp lacks an offensive unit, Blarblade+ can work great especially for checking strong sword units.

If your comp lacks a defensive ranged unit, You can run Blarserpent+, DD3 and DD3 seal/Iote's(if you need an archer check), although you will miss out on a lot of damage potential. Despite that, she can still easily handle most mages during enemy phase with her base kit.

Morgan is more of an Enemy Phase mage bait. Thanks to her Blarserpent+, she gets Distant Defense 3. Combined with Distant Defense A slot and Distant Defense S slot, she can get an extra 18 in her resistance, 24 with Res Tactic. Give her Glacies, or Iceberg, she's pretty much set.

Or you could run Blarblade, but she won't deal full damage since Spd Tactic is missing, but you could have 2 fliers in the Tactic team. One with Hone Fliers to give Morgan +6 Atk and +6 Spd.

Idk, full tactic buffs and Blarblade are tempting, and that kind of build wouldn't render her completely useless in the ranged tank department. Personally, I have a problem with full-on ranged tanks, the reasons for which you would use them are often easy to play around and they typically don't live as long, but if anyone can pull it off, it's Morgan. Like the others have said, it's probably best to judge her based on the rest of your team, just remember you can't tank bows with her lol.