Comforting Loneliness

At the beginning of each players upkeep, he or she gains control of Comforting Loneliness.
At the end of your turn, sacrifice a creature that does not share a creature type with another creature you control.
"it's quiet and dark tonight, no one is near. no one who can embrace me. I'm searching but can't find anyone. i'm screaming but i hear nothing. it becomes darker and i'm lonely with only me as company, until. Not even i remain. But at least i have you now."