This mana can't be spent to cast a nonartifact spell." You can use the added by a Powerstone token on anything that isn't a nonartifact spell
Also, they usually have high requirements, so not having any basic Pokmon can leave you stuck for a few turns
Jaya Ballard, after revealing herself to having masqueraded as Mother Luti on Regatha, on having inadvertently started a religion around herself:A long time ago, I went to Regatha, helped a few people, got drunk, talked a lot, apparently did some very impressive pyromancy, then left
-1/-1 Counters Obviously, these are awful on our creatures, so we might as well start with great big chunks of mana, right
The ability to tap in the command zone is nice, but overall this is a pretty average commander
Haakon, Stromgald Scourge Haakon, Stromgald Scourge is a controversial card for some players