Alabaster Host Intercessor
Creature — Phyrexian Samurai
When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield.
Plainscycling 
(, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)
Konstantin Porubov
Rulings
If Alabaster Host Intercessor leaves the battlefield before its enters-the-battlefield ability resolves, the target creature won’t be exiled at all.
(wotc • 2023-04-14)
Rulings
If Alabaster Host Intercessor leaves the battlefield before its enters-the-battlefield ability resolves, the target creature won’t be exiled at all.
(wotc • 2023-04-14)