mtg x men cards X-Men meets - xmen post MTGNexus - Apocalypse, The First

This card is involved in so many combos its laughable

An additional 5% of Play Boosters feature art cards with a gold-stamped artist signature or Planeswalker symbol

Alrund's Epiphany also has foretell, which is a mechanic that allows you to pay two mana to put it into exile and makes it cost only six mana in a later turn

Zariel does just one worse with +1/+0 and haste for her +1 ability for one less Green mana and four mana total

In other words, there's no way to have the ability trigger if no permanent you controlled has left the battlefield that turn, even if you intend to have one do so in response to the triggered ability

This is because changeling applies before the effect that removes it