This Leyline isnt a must-have for token decks as it can be replaced with cards like King Darien XLVIII and Eldrazi Monument, and it even pumps your opponents' tokens, which is usually a no-go
Sapling of Colfenor Sapling of Colfenor is another commander that works with walls to provide a stream of card advantage
These cards are referred to as mass removal, board wipes, or board clears.
Similar to Blackblade ReforgedBlackblade Reforged, we've got dual equip costs with Wrecking Ball ArmWrecking Ball Arm depending on how important the wielder might be
However, its secondary effect is where the Information Gain lies: This attack does 30 more damage for each Energy attached to all of your opponents Pokmon. In a meta dominated by high-energy Ancient and Future decks, or the upcoming Mega Rayquaza ex which requires 4-5 Energy to swing, Mega Mewtwo Y ex can easily hit for 360+ damage for a three-energy investment
I'd hesitate to call it a high-powered deck, as it's really not fully tuned with all the staples a deck like this would probably want