Wither (This deals damage to creatures in the form of -1/-1 counters.)
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
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.
Sickle Ripper100%
$0.10↓#22505↓0.0518.3 years
"Wither"
gives-mm-counters
Juvenile Gloomwidow100%
$0.34↑#158190.0018.3 years
"Wither"
gives-mm-counters
Harvest Gwyllion100%
$0.10↓#31217↓0.29↑18.1 years
"Wither"
gives-mm-counters
Smoldering Butcher100%
$0.11↓#24829↓0.0018.1 years
"Wither"
gives-mm-counters
Rustrazor Butcher100%
$0.24↓#24188↓0.22↑18.3 years
"Wither"
gives-mm-counters
Scuzzback Scrapper100%
$0.16↓#25871↓0.0018.3 years
"Wither"
gives-mm-counters
Wildslayer Elves100%
$0.17↓#26760↓0.0018.3 years
"Wither"
gives-mm-counters
Oona's Gatewarden97%
$0.24↓#23050↓0.25↑18.3 years
"Wither"
gives-mm-counters
Boggart Ram-Gang96%
$0.17↓#23663↓0.0018.3 years
"Wither"
gives-mm-counters
Twinblade Slasher96%
$0.34↑#25301↓0.31↑18.1 years
"Wither"
gives-mm-counters
Cinderbones95%
$0.18↓#20309↓0.67↑18.3 years
"Wither"
gives-mm-counters
Slinking Giant95%
$0.10↓#30829↓0.22↑18.3 years
"Wither"
gives-mm-counters
Inescapable Brute90%
$0.18↓#28637↓0.56↑18.3 years
"Wither"
gives-mm-counters
Duergar Cave-Guard89%
$0.12↓#30877↓0.28↑18.1 years
"Wither"
gives-mm-counters
Midnight Banshee88%
$0.24↓#4694↑0.40↑18.3 years
"Wither"
gives-mm-counters
Puncture Blast86%
$0.22↓#181250.22↑18.1 years
"Wither"
gives-mm-counters
Lockjaw Snapper86%
$1.11↑#158390.29↑18.3 years
"Wither"
gives-mm-counters
Scarscale Ritual86%
$0.11↓#24584↓0.31↑18.3 years
"As an additional cost to cast this spell, put a -1/-1 counter on a creature you control."