Studio X includes everyone who makes tabletop Magic from the designers to the creative people to the editors to the graphic designers to the people that handle layout and printing to the marketers to the architects and business people (and I'm forgetting many sections - I apologize)
Never mind then
For our list, the best humble effects will be costed aggressively, have instant-speed activations, or will effectively be semi-permanent removal for those indestructible creatures
For example, if you put a Robobrain War Mind onto the battlefield with The Master's last ability, its base power and toughness will be 3/3, and the number of cards in your hand won't affect its power at all
Its not very exciting, so weve given that one a miss from the top 10
There were also many more Lessons in the Avatar: The Last Airbender Eternal supplemental set, where they appeared in Jumpstart booster packs