Can Sett's signature spell target an already buffed unit to move it, even though it can't be buffed again?

Ruling: Yes, you can target an already buffed unit with Sett's signature spell and move it, even though the buff portion of the effect cannot be applied.

Nuances:

• The spell can still be cast on the unit to use the movement effect
• The unit being unable to receive another buff does not prevent it from being a valid target