4 Energy is a 'lot', if you don't have ways of generating more of it, and while blowing up a single land a turn might seem slow, it is annoying, and Commander runs a lot of nonbasics
Its also abusable with cards like Cabal Coffers, but Im not going to go into that in too much detail
Crow can be run at 3 copies here, but Bystial Druiswurm and Bystial Magnamhut are to counter DARK or LIGHT monsters that use their effects in the GY--specifically, Ishizu Tearlaments
In a pinch, Bloodshot Cyclops can also sacrifice itself to its ability.
Mishras Bauble At a glance, this is on par with Urza's Bauble, but Mishra's Bauble, one of the best eggs in Magic, is far stronger for one reason: Theres value in looking at the top of your deck
In addition to rarity symbols and card types, here are some other things to watch for when considering the value of a Pokmon card: Age: Older Pokmon cards may carry a premium depending on their rarity