The level decrease throws off math for summoning XYZ and Synchro monsters, thus making the opponent struggle to get their combos started, which allows Predaplant Dragostapelia to control a match
Then the Crash Town arc gives us a town heavily stylized after The Wild West
Illuminor Szeras brings this effect with some new flexibility
its likely that your Cube has some other card for 1B that will be upgraded more directly to Infernal Grasp, whereas Fateful Absence adds some depth to the relative dearth of two-mana white removal
Until the end of this turn, the ATK of that monster increases by 800 when it battles an opponent's monster, and it can attack all monsters on the opponent's field once, and you cannot Special Summon monsters
While many prominent removal spells will hit any creature (fliers in particular are lightning rods for these), there are also a significant number that specifically target fliers, particularly in Green