The cheaper equip cost versus Swiftfoot Boots makes the Greaves favorable in almost every situation, minus the ones where you need to target your commander with a lot of spells think aura and equipment-based Voltron decks but even then you can always move the Greaves over to another creature at sorcery speed
If youre looking for cheaper options, I really like Magus of the Wheel, and I think it achieves the disruption better than Wheel of Misfortune, which is another fine option
Throne of Death can help set Egon up for success if you have a way to return it to your hand and it can enable all manner of mill strategies
Staples like Consider, Opt, and Preordain are already strong includes, and Matoya makes them even more powerful
Pull everything else and youre holding 10,000-15,000 worth of cards against a 45,000 purchase