After doing damage, you may attach up to 3 Energy cards from your discard pile to this Pokmon
When I wrote the first iteration of this list back in February 2004, the latest set included was Mirrodin
The community treats this card as one of the few Trainer SIRs that justifies premium pricing through narrative weight rather than rarity alone
Which means you can use the effect, go through your plays and get a Rainbow Dragon or one of its variants on the field, and then during the Battle Phase you get to pick which of your Crystal monsters gets to use that effect
Cosplaying as the great Kaibaman is a real twofer, as you're not only dressing up as a funny superhero, but also dressing up as the billionaire duelist that inspired its creation as well
Its a great mana-fixing tool, especially if you want shuffle effects or ways to get lands in the graveyard