Peer into the Abyss

Sorcery

Target player draws cards equal to half the number of cards in their library and loses half their life. Round up each time.

2020-06-23:
The life lost is rounded up, not the remaining life total. For example, if the target player has 7 life, they lose 4 life and end up with 3. Similarly, the number of cards drawn is rounded up, not the number of cards remaining in the library.
2020-06-23:
To draw the cards, first the player determines how many cards to draw, then draws them. This event may be modified so that a different number of cards are actually drawn.