This is how I have played it and how I have now interpreted it too. But the wording is a bit unclear. Thanks for responding!!

“When a player claims the battlefield, if the do not control it, they take control of it and may use its “claim” ability” Question: if you already control the battlefield and then claim it, can you use the “claim ability? “That player chooses one of the 3 face up set aside battlefields, flips it over and may use its “claim” ability OR power action” Question: so if you are the first player to claim you take control of the battlefield, can use the claim action on that battlefield AND you use the claim action on one of the three set aside battlefields?

Anyone know if there is a resource for quick themed decks lists? I don’t have time to come up with multiple themed friendly decks To casually play with my friends and kids who have no interest in the competitive side of the game. I would love to find themed and balanced lists of decks that are great for teaching new players