Another class of effects actually come from lands and replace the destroyed land like Demolition Field, Field of Ruin, and Ghost Quarter, but I'll skip those for the most part on this list
You can only use each effect of "Mannadium Imaginings" once per turn
Assuming the nature of the Dot Code bars on the Celebi card is typical for all other cards the Small format bar encodes the numbers 1 through 19 (skipping zero and starting at one, which is generally not the case when using binary counting) the Large format bar encodes the numbers 25 through 53 for some reason numbers 20-24 are not used its also possible that, for other multi-card programs (like NES game e-Reader cards) larger numbers are used to keep track of which cards were scanned
It effectively gives the player more options, and its a fun bit of design
Sheoldred / The True Scriptures The latest Sheoldred from March of the Machine is a tough pill for everyone else to swallow
Investment Thesis The Sword & Shield Base Set offers a balanced investment opportunity with potential for appreciation driven by its foundational status and key chase cards