Lunar Unmaking

When Lunar Unmaking enters the battlefield,
exile up to one target creature or planeswalker
until Lunar Unmaking leaves the battlefield.
{t}, Discard a card: Create X 1/1 colorless Spirit creature tokens with flying, where X is the total
mana value of all cards exiled by Lunar
Unmaking divided by two, rounded down.
A spell both gentle and absolute.