Yog-Sothoth, the All Knowing

Flying, Indestructible, Lifelink
This spell can't be countered.

Whenever Yog-Sothoth enters the battlefield or attacks, each opponent reveals their hand. You may choose one of the revealed cards of each player and discard it. You loose life equal to the number of cards discarded this way.
Cosmic spells you cast can't be countered during your turn.

"Yog-Sothoth knows the gate. Yog-Sothoth is the gate. Yog-Sothoth is the key and the guardian of the gate. Past, present, future, all is one in Yog-S