There are a very limited umber of "cards with a moon in their art" that are mono-black, but the ones you do have access to are pretty interesting
For example, the first time you cast your commander from the command zone in a game, if you spent mana from Opal Palace's last ability to do so, it will enter the battlefield with a +1/+1 counter
A lot of them appear to have been triggered by cEDH demand, like Grim Monolith and Lions Eye Diamond, but cards that are only good in regular old multiplayer Commander dont seem to be exempt from this rising tide either
Make no mistake, this is an incredibly grindy control deck
Pratte notes that the 1st Edition cards were only available in 11-card booster packs
Many players like to think that they will just let their Storm opponent combo off only to foil their plans right at the end by stifling the storm trigger on Tendrils of Agony