Dotted Saboteur

Flash, First Strike
When an opponent begins their upkeep, they may pay {1}. If they don't, you create a 0/1 point token.
Foretell {u} (During your turn, you may pay {2} an dexile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Flashback {2}{u} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
"Be afraid of what lurks in the z-axis, unbeknownst to the world."