Delay Unto Eternity

Target spell is exiled with X time counters on it
where X is it's CMC and gains Suspend. (At
the beginning of your upkeep, remove a time counter.
When the last is removed, cast it without paying its
mana cost.)
While the spell is exiled, it has "{1}: Remove a
time counter or put another time counter on
this spell. Any player may use this ability."
If you delay something long enough,
it will never happen.