That's about the average we'd see for most Commander decks, and might even be excessive for a deck that relies on aggression
Gogo is a four mana red card that Im very happy to play, especially in decks that revolve around big haymakers like Etali, Primal Storm
Simic Stompy plays a mixture of creatures and pump spells, the latter of which are used to boost up Hemosymbic Mite's stats so it can boost up another creature's stats, letting you essentially double up on your pump spells
The other card, Mulan, Disguised Soldier, is also perfect for the early game, as you can play it to potentially draw into one of your many powerful items and create a chain of drawing more cards
The decks span four of the most popular archetypes: Slivers, Eldrazi, Enchantress and Superfriends