Final Revels 

Sorcery
Choose one —
• All creatures get +2/+0 until end of turn.
• All creatures get -0/-2 until end of turn.
click a line to search just that ability, click more to combine them
Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Poison the Waters 99%
$0.18#13222
"• All creatures get -1/-1 until end of turn."
+1 more matching line