The "clockwork paladin" pet gives a card called the "clockwork minion". If you summon this minion into battle then, put a guardian spirit on the minion, the minion looks normal. But, when your opponent kills the minion, it comes back to life and appears to be stuck underground. You can only see part of the minions head and it looks very weird. This is a visual glitch and it does not effect the minion's ability to cast spells. This has happened every time I have put a guardian spirit on the minion and then having the minion come back to life.