Dont want to dig for haste
WotC notes that the card promotes a lot of fun angles for Commander players, and while powerful, the green artifact can be interacted with and requires some setup to get into play
A creature attacks alone if it's the only creature declared as an attacker during the declare attackers step (including creatures controlled by your teammates, if applicable)
Protection from Planeswalkers For instance, I control the creature [c]Sparkhunter Masticore[/c], which has protection from planeswalkers
However, there are also some cards like Vorinclex, Voice of Hunger that feel out of place
Personally I don't run these cards in my own paper decks, but if your playgroup is cool with it and you want the power boost then add them