Your task is to defeat the eight Club Masters (read: gym leaders), four Grand Masters (Elite Four) and the Champion (erm, Champion) to collect the four Legendary Pokemon cards to add to your deck
The colossal Machina army is back with vengeance inStructure Deck: Mechanized Madness
Pachirisu is a great sacrificial card for helping build up cards on the bench, able to generate one additional energy per turn at the cost of one initial energy cost, while Oricorio is a great switch in if your opponent starts sweeping with a Pokmon ex card
I wonder why they decided to go with Reshiram and Zekrom on the packs again and chose Regigigas out of all the Pokemon-EX in the set when Kyogre, Groudon, and Kyurem seem so much more deserving (and when Reshiram and Zekrom are also featured in the theme decks)
Green has ways to fetch lands, and since this card itself is heavy, ramp is essential, so by the time you cast this, you are unlikely to be in two or fewer colors