Sarus, Avacynian Mourner

Devoid (This card has no color.)
Eminence - As long as Sarus, Avacynian Mourner
is in the command zone or on the battlefield,
colorless spells you cast cost {2} less to cast.
Vigilance.
Whenever you cast a colorless spell, if Sarus, Avacynian Mourner is on the battlefield, put a
+1/+1 counter on it.