If you save a card with Sett's legend ability and spend the buff, can you float that buff to also count it towards Vanguard Helm?

Ruling: No, you cannot float the buff from Sett's legend ability to count towards Vanguard Helm after spending it to save a card.

Nuances:

• Once the buff is spent on Sett's legend ability to save a card, it no longer exists to be applied elsewhere