yugioh legendary dragons decks Yu-Gi-Oh! Trading Card Game- Dragon Box : Toys & Games and threw in a Ritual Monster for good measure Legendary Dragon Decks Collector's Set

Shadowy [D] Energy - Special Energy As long as this card is attached to a Pokemon, it provides 1 [D] Energy

Finally, the set features a Trainer card in the form of the Switch card as well as the Judge and Serena Supporter cards

If the copied creature is copying something else, then Oko becomes a copy of whatever that creature copied, with the stated exception

Not only is it a scaling token generator, it fits quite well in this deck, as a lot of the creatures are also humans

The gnome has flash, so you can plop it down in response just as your foe cracks an Evolving Wilds (it triggers off Fetchlands too)

I'd grab a pen and have some paper handy to write on so that if you need to make notes about things that are harder to track because they aren't as visible ("Okay, I have his Teferi's Protection exiled with my Spelljack" or "Erin's graveyard contains three cards she can cast from the graveyard"), you have easy access to doing so