Ringwraith

Morph {1}{u}{b} (You may cast this card face down
as a 2/2 creature for {3}. Turn it face up any time for
its morph cost.)
When Ringwraith is turned face up, counter
target spell unless its controller pays {3}.
When Ringwraith dies, exile it with three time counters on it and it gains suspend. (At the
beginning of your upkeep, remove a time counter.
When the last is removed, cast this card without
paying its mana cost. It has haste.)