Day of the Dragons (Onslaught/Legions/Scourge) The first rare "bomb" on this list, Day of the Dragons turns all of your creatures into 5/5 flying monsters
However, they provide great defense and surprisingly good utility, and there are a number of sneaky ways to make walls attack using their massive toughness stats, often wiping opponents out
Wings of the Cosmos Argh, why am I doing this
An intentionally unclear format Masters 25 reminds me of cubes designed to be different, rife with beloved cards, historically significant combos, and random foils folks had lying around
The solve condition here is extremely reasonable, particularly since it creates an artifact itself on entry, but three mana for a 4/4 flier just isnt a good deal with so many hoops attached
Thats already sweet