You may reveal up to two creature cards with mana value X or less from among them, where X is the number of creatures that convoked this creature
Incidentally, you can read our article about metal Pokemon cards if you need an explanation of what they are and where they come from
Syr Konrad, the Grim Every Commander player knows Syr Konrad, the Grim
If your opponents deck can curve Longtusk Cub into Whirler Virtuoso into Glorybringer, you cannot reasonably expect to match them threat for threat every turn
That means no Hallar, but it's worth it to have the Seedborne Muse effect and the card draw in your Command Zone
That said, the Commander Bracket system is probably better than the informal power level rankings , or leaving it up to players to say whether their deck is "competitive" or not without any solid criteria