Estrid's Invocation

You may have Estrid's Invocation enter the
battlefield as a copy of an enchantment you
control, except it gains "At the beginning of
your upkeep, you may exile this enchantment.
If you do, return it to the battlefield under its
owner's control."
Once a grand master at the Academy of Raya
Lucaria, now exiled and residing near the town
of Sellia.