Of course, they arent bad for seasoned players looking to pad out their playsets or spice things up when teaching friends either
Swiftfoot Boots are better than Lightning Greaves in most circumstances when youre building around an equipment strategy, or when playing predominantly white interaction like Blacksmith Skill (as opposed to say, a Swan Song to counter a wrath instead)
This ability makes Angus Mackenzie the most optimal commander choice to spearhead a deck of the polarizing "Turbo-Fog" deck archetype, as it can be used to reliably prevent combat damage during each turn rotation and stall games
Then, there is the phenomenal clash of colors
Once a creature that has reach because of Sphere Grid's last ability has blocked a creature, removing all +1/+1 counters from that creature or causing Sphere Grid to leave the battlefield won't cause that creature to stop blocking
Id say given the information so far in this article you can probably get 4060% of the wins available to you