Faerie Fencing {X}{B}
Instant
Target creature gets -X/-X until end of turn. That creature gets an additional -3/-3 until end of turn if you controlled a Faerie as you cast this spell.
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.
Take the Fall 97%
$0.13#14685
"Target creature gets -1/-0 until end of turn. It gets -4/-0 until end of turn instead if you control an outlaw."
Fungal Infection 96%
$0.15#15270
"Target creature gets -1/-1 until end of turn. Create a 1/1 green Saproling creature token."
Peppersmoke 96%
$0.25#15398
"Target creature gets -1/-1 until end of turn. If you control a Faerie, draw a card."
Tribute to Urborg 94%
$0.06#26199
"Target creature gets -2/-2 until end of turn. If this spell was kicked, that creature gets an additional -1/-1 until end of turn for each instant and sorcery card in your graveyard."
Lethal Exploit 94%
$0.18#21277
"Target creature gets -2/-2 until end of turn. It gets an additional -1/-1 until end of turn for each modified creature you controlled as you cast this spell."
Eye Gouge 94%
$0.06#28161
"Target creature gets -1/-1 until end of turn. If it's a Cyclops, destroy it."
Desert's Due 94%
$0.14#23474
"Target creature gets -2/-2 until end of turn. It gets an additional -1/-1 until end of turn for each Desert you control."