1mana monsters

If Skeleton were an effect that didn't do anything but sac for 2 and give you a Skull, I'd probably say that was acceptable (gets you one more mana than a Skull, but takes one extra turn).  At 18/4, giving you the skull on death... maybe a little too flexible, so I suppose I could get behind a sac drop to 1.  I think zero sac is a little much, though. I do think it's kind of silly to only do stat changes first when the clear fix is to adjust the sac.