I have never actually built this deck, so I cant vouch for it
Since its a cast trigger, that spell doesnt have to resolve to get the energy, but that means you cant get it from other artifacts just entering the battlefield
Once transformed, Ghost-Spider rewards you with +1/+1 counters when you play lands from exile, while also letting you cash in counters to exile more cards
BPhillipYork: This is an okay way to bust out a huge combo win, or some nasty combination of creatures and also clear the board of creature based stax pieces
A fully playable sliver
That being said, all the best red token generators can be roughly grouped into: Those that create Treasures, Those that create a copy of a creature you control, usually exiling or sacrificing it at the end of combat or end of turn, Those that spawn 1/1 creature tokens, Those that create some really big dragons