Ephemerate - Strixhaven Mystical Archive (STA) Instant each opponent loses X life

each opponent loses X life and you scry X

As an additional cost to cast this spell

where X is the greatest power among creatures you control

Even the oldest treefolk was but an acorn when Lorwyn's first mysteries were born

and "Whenever this creature deals combat damage to a creature

Ephemerate - Strixhaven Mystical Archive (STA) Instant each opponent loses X lifeExile target creature you control, then return it to the battlefield under its owner's control. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)