Flying
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Creatures your opponents control with counters on them can't attack or block.
When this artifact enters, put a -1/-1 counter on each creature target player controls.
, : Proliferate twice. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)
, 
: Proliferate twice. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)