Mulac, Esoteric Overseer

Eminence — Sorceries you control are Arcane.
Haste, shadow, shroud
Whenever Mulac, Esoteric Overseer attacks,
the next bloodrush, channel, cycling, foretell,
recover, splice, suspend, or transmute cost you
pay this turn is reduced by {w}, {u}, {r}, or {1}.
Whenever a Spirit spell is cast, return Mulac
to its owner's hand.