L'Rell, Fierce Visionary (Showcase) (Klingon) [Star Trek]

At the beginning of combat on your turn, create a 2/1 red Klingon Warrior creature token with haste. Sacrifice it at the beginning of the next end step.
{2}, Sacrifice another creature or artifact: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)