The average mana value of spells in your deck should be around 2 or 3, as that ensures you can cast spells throughout the game
I suggest you read ahead so that you can check out those two, then come back to this beast commander
II Zantetsuken This creature gains "Whenever this creature deals combat damage to a player, that player loses the game." III Hall of Sorrow Draw two cards
Winnie The Pooh & Piglet, Hunny Mages Amethyst & Sapphire We've finally arrived at what, for many people, will be the ultimate chase card, because it features one of the most popular characters in all of Disney Lorcana, Winnie the Pooh, Hunny Mage
Yet, there is actually a sixth secret rarity called Enchanted, which includes twelve more cards that go above the 204 standard numbered set and which are only available as foil cards
Supplemental set: A catch-all category for MTG sets that don't fall into one of the above categories