I wonder if Spear Cretin is a loop... 'Cause on the card it says when it is sent to the graveyard. So does that mean when it is in the graveyard? I have been always wondering about this because I don't see an official ruling out there. Thanks for helping.

1. It must be flipped first somehow without being negated.

2. If you special summon it f/d, you'll have to get it flipped again and get it sent to the graveyard somehow.

You CAN keep getting Spear Cretin back if you have one in the graveyard and one on the field and such through the other's effect.