People might say that's weird but screw that
In Commander, this prevents you from creating copies of your commander, which has the potential to make the game incredibly unbalanced
Xanathar, Guild Kingpin , Ashiok, Nightmare Weaver , Nightveil Specter , Silent-Blade Oni , and Mnemonic Betrayal will all let you play your opponent's decks for them
The low cost makes it an efficient way to put a stop to tons of strategies that rely on shenanigans to generate a ton of value
Intrepid Adversary Intrepid Adversarys anthem effect scales with the amount of mana you put into it, much like a multikicker ability
See also: Binder layout planner What are the chase cards in XY - Primal Clash? The top chase card in XY - Primal Clash is Primal Kyogre EX Alpha 149 Full Art (Ultra Rare) at $279.73