Energy has been revisited several times since, including a stunning run that got another card banned, this time in Modern (Amped Raptor)
This is standard for Pokemon TCG sealed product
It can make its own mana rocks by simply tapping and paying three mana that will stay on the battlefield even if Svella ever leaves it
Mirrorweave Theres a few tricks you can pull with Mirrorweave, like making your tokens a copy of a stronger creature
First up is an attack which only requires one each of Fire and Lightning Energy to use, dealing 20 damage per damage counter on Ns Reshiram (with a maximum of 12 counters possible, as each damage counter equals 10 HP, and Ns Reshiram has 130 HP)
Planechase isn't its own format, instead being additional rules that players add to their game