mtg preconstructed commander decks Streets of New Capenna Decklists Magic: The Gathering - Tarkir:

This gives it high value

That may sound slow, but assuming youve also got a few one mana creatures like Ruin Crab, which mills whenever you play a land, and maybe a couple of copies of Tashas Hideous Laughter, then you can easily take someone out by turn six or so with this strategy

Some are available at stores like McDonalds while others are only available for people who place well in tournaments

While decks that need to deploy Goblin Guide and similar cards on turn 1 dont love this, plenty of decks do

You can actually cheat this exile clause by using a spell like Not Dead After All on Admantoise, but in most games, thatll likely be overkill

The main feature of creatures is that they can attack and block