Lost in Time

Exile target spell or permanent, then put five time
counters on it. It gains suspend.

Madness {u} (If you discard this card, discard it
into exile. When you do, cast it for its madness cost
or put it into your graveyard.)

"At first I went mad, of course. But after a few
millenia I got bored with that too and went sane.
Very sane."
— Professor Paradox