Tundra Wall is no joke for competitive players, either, granting a solid protection to Pokemon with Basic water energy attached, while Freezing Chill shuts off your opponents Pokemon from attacking altogether.
Your commander allows you to give away permanents for just three mana, and it hits everything including lands
If there is ever a Location-heavy deck that is looking to flood the board with Locations and wants to keep them around longer, Felix could find a home there
Solution Choose a reliable seller
It's been the primary strategy of countless tier-one decks throughout the history of this game, such as Buzzwole-GX / Lycanroc-GX, Darkrai-EX variants, Tornadus-EX variants, the original Haymaker, and so many more
Removing your opponent's biggest threat and then reanimating it onto your side of the board grants you a huge advantage