Slass'tik, Mummy Lord

Wither
Creatures opponents control with -1/-1 counters
on them lose flying. The same is true for First
Strike, Double Strike, Deathtouch, Haste,
Hexproof, Indestructible, Lifelink, Menace,
Reach, Trample, and Vigilance.
"From beneath the shifting sands of the Anauroch
rises a pox upon all of Faerun ."