Tauros, the Raging Bull

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Every upkeep you must sacrifice a creature, if you
can't, you lose 2 life. If you can, you gain 1 life.

When Tauros, the Raging Bull leaves the battlefield, return all creatures from the graveyard that was sacrificed to the battlefield with a +1/+1 counter