You can make a lethal alpha attack, you can force an opponent into bad attacks and blocks, and its just one of the most interesting cards in Boros, especially in Commander games with full boards
Many of the lands you want to target with Grazer enter the battlefield tapped anyways, so this offsets what would normally be an additional cost
Some felines to perk your ears up for are Alms Collector, Enlightened Ascetic, and Highcliff Felidar
The Chaos Orb uses Old School Magic rules, so you have to target the permanent you want to destroy, and then it also has to do a full rotation when you toss it
This unlikely duo combines your KLOS creatures with green's ample ramp options, making it easier to cast your expensive creatures ahead of curve
Its definitely worth adding a card to your inkwell for the first five turns, but you dont have to keep doing that forever