Unceasing Inquisitors

Deathtouch

At the beginning of your upkeep, you may sacrifice
a creature. If you do, scour. (Exile the top card of
your library. You may play it on any turn you dealt
combat damage to a player.)

{1}, Exile a creature card from your graveyard:
Target creature gains deathtouch until end of turn. Activate only as a sorcery.