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For the last loyalty ability, none of the chosen creatures are targets of the ability

As long as this Pokmon is your Active Pokmon, your opponents Basic Pokmons attacks cost [C] more

Both Pokemon have moves that fit the adjusted stats, so Mega Latios has good physical attack moves like Zen Headbutt

Then get a mix of packs from the sets that are in the current Standard rotation: Wilds of Eldraine , The Lost Caverns of Ixalan , Murders at Karlov Manor , Outlaws of Thunder Junction , Bloomburrow , Duskmourn: House of Horror , Foundations , Aetherdrift , Tarkir: Dragonstorm , Final Fantasy , Edge of Eternities , Spider-Man , Avatar: The Last Airbender , Lorwyn Eclipsed , and Teenage Mutant Ninja Turtles