Does Sett's legend ability work the same as Zhonya's (as a replacement effect), and can it save a unit from Falling Star?

Ruling: Sett's legend ability is a replacement effect and works similarly to Zhonya's. It cannot fully save a unit from Falling Star if both triggers would affect it.

Sequence:

• If Falling Star's two triggers both target a unit with 2M or less and a buff, you can save the unit after the first trigger
• However, the unit would then die to the second trigger

Nuances:

• The replacement effect only applies once, so multi-trigger effects like Falling Star can still destroy the unit with subsequent triggers