This is probably better just for the pure haste and threatening boardwipes
Cards like Opposition Agent, Deep Gnome Terramancer, and Rhystic Study work just fine while being detained, giving you time to access more expensive spells that Lavinias influence cannot reach
While individual differences in children are very large, I think children as young as early four years old could play it
For example, Chilling Reign featured multiple versions of the legendary Galarian birds, with numerous art and foil cards of the monsters, increasing the set's value compared to other expansions
Decoding the MIC dots should be able to identify the printer used and solve the mystery
This solution made morph one of the best Limited mechanics wed ever seen, and also made Khans of Tarkir one of the all-time best Limited formats in Magics history