The problem is that when you compare it to other cards that change base power and toughness like this, the rate often doesn't feel the best, and it's only really good if your opponent is blocking or if you're going unblocked on the highest tier mode
Each of Gary Clone, Powder Ganger, Securitron Squadron, and Wasteland Raider has a squad ability, and they have a mix of attack triggers and ETB triggers
The Vehicle can become an Artifact Creature because of the Crew ability, meaning it can enter combat when the necessary number of creatures are tapped
In Hades Infernal Schemer, a Dreamborn version of the villain is depicted plotting over a cauldron
You want colors that feel correct, but you also do not want hyper-saturated nonsense that screams inkjet enthusiasm. ProxyMTG lands in a sensible middle ground
However, we can offset that by including cards that put counters on all of our creatures