However, I think its worth noting that Death or Glory compares favorably even with Black mass reanimation spells, which cost significantly more than 5 mana
The ability to gain huge numbers of loyalty counters here is significantly more useful than the -12 ability which, although undoubtedly strong, is costed at an impractically high rate (two points of loyalty higher than on the original card)
If you didnt, you may want to consider adding a second restriction
Again, this How to Build a Command Deck guide and the Commander Deck Building Template are by no means hard rules that must be followed
You can also trigger it on your own with spells such as Path to Exile or Winds of Abandon, even though it only gets one land per turn
Artifact You have no maximum hand size