These all bring value, but with Shimmer Dragon on the field, each of them also represents half of a card-draw
Weaknesses Might and Magic is a nice showcase of the expansion's big new mechanics, but its pool of technical options is pretty limited
Counter target activated ability, triggered ability, or noncreature spell
The indestructible counter will hopefully allow you to take advantage of the doubling effect and reduce the effectiveness of your opponents board wipes (the scourge of token decks), and makes Mondrak an excellent token commander
This Skeleton encourages it in fact, as Demilich can copy any instant or sorcery spell when it attacks to re-use your best spells
Getting it in your yard may be a bit of an issue in white, but its not impossible