Strongarm Tactics 

Sorcery
Each player discards a card. Then each player who didn't discard a creature card this way loses 4 life.
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.
The Death of Gwen Stacy 94%
$0.38#9743
"Each player may discard a card. Each player who doesn't loses 3 life."