Archive Trawl

Draw a card. After Archive Trawl resolves,
you may discard a card. If you do, put
Archive Trawl into exile with a time counter
on it.
Suspend 1—{u}(Rather than cast this card from your hand, you may pay {u} and exile it with a time counter on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)