The cost is minimal, and the effect is fantastic
Seeker 2 Diabound Kernel 3 Mekk-Knight Blue Sky 1 Mekk-Knight Indigo Eclipse 3 Mekk-Knight Purple Nightfall 3 Great Sand Sea Gold Golgonda 3 World Legacys Memory 3 Super Hippo Carnival 3 Springans Watch 1 Terraforming 1 Harpies Feather Duster 3 Switcheroroo 3 Trap Trick 2 Waking the Dragon 3 Springans Ship Exblowrer 1 Relinquished Anima 1 Linkuriboh 2 Baba Barber 1 I:P Masquerena 1 Missus Radiant 1 Pentestag 1 Knightmare Phoenix 1 Knightmare Unicorn 1 Accesscode Talker 1 Borrelsword Dragon 1 Underworld Goddess of the Closed World A Deck meant to be built from three copies of the new Structure Deck, plus various Extra Deck cards
Oh wow, this took me off guard
Well, no, you see, when Arena came out, it had been in beta for a year Ahh, okay, so those cards are legal, too
Resolve the There and Back Again trigger, putting a lore counter on it
For each Energy card discarded this way, choose 1 of your opponent's Pokemon and do 30 damage to it