Jes Kal, Lich Lord

Jes Kal enters the battlefield with half X +1/+1 counters.
Menace
When Jes Kal, Lich Lord enters the battlefield, creatures you control get +1/+1, menace, and deathtouch.
When Jes Kal, Lich Lord is cast, creatures your opponents control get -X/-X until end of turn,
and you gain half X life.
Knowledge is power, and I know so much about you...