Keyword Hate

Cards that force creatures to LOSE keyword abilities rather than destroy or buff them. Archetype of Imagination makes opponents' creatures lose flying and prevents them from gaining it, Arcane Lighthouse strips hexproof and shroud so blockers and attackers can be targeted, Humility wipes all abilities from every creature, and Bonds of Mortality removes hexproof and indestructible to open a path for follow-up removal. The defining text is an explicit "loses" clause aimed at one or more keywords. This grouping has no siblings, but note the contrast with effects that merely reward, punish, or destroy keyworded creatures: cards that deal damage to creatures with flying punish without removing the ability, and cards that destroy a creature with flying kill it without stripping anything. Pure granters that hand out a keyword are the opposite role and are excluded.