Summoner's Bane 
Instant
$0.08 #23670 0.06 17.0 years
Counter target creature spell. Create a 2/2 blue Illusion creature token.
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Cards similar to Summoner's Bane 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.
Geist Snatch95%
$0.13↑#242240.37↑14.5 years↓
"Counter target creature spell. Create a 1/1 blue Spirit creature token with flying."
Essence Scatter94%
$0.07↓#2634↑0.23↑17.3 years
"Counter target creature spell."
Preemptive Strike94%
$6.27↑#28976↓0.31↑27.5 years↑
"Counter target creature spell."
False Summoning94%
$0.22↑#248560.0628.3 years↑
"Counter target creature spell."
Exclude92%
$0.15↑#9464↑0.0626.0 years↑
"Counter target creature spell."
Bone to Ash92%
$0.05↓#14027↑0.16↑14.7 years↓
"Counter target creature spell."
Remove Soul90%
$0.11↑#14798↑0.21↑32.4 years↑
"Counter target creature spell."
Trap Essence87%
$0.24↑#16151↑0.35↑12.1 years↓
"Counter target creature spell. Put two +1/+1 counters on up to one target creature."
Essence Capture86%
$0.18↑#5875↑0.007.7 years↓
"Counter target creature spell. Put a +1/+1 counter on up to one target creature you control."
Hornswoggle86%
$0.17↑#13717↑0.56↑8.8 years↓
"Counter target creature spell. You create a Treasure token."
Withering Boon85%
$11.35↑#5123↑0.68↑30.0 years↑
"Counter target creature spell."
Mystic Denial85%
$0.16↑#28826↓0.16↑29.5 years↑
"Counter target creature or sorcery spell."
Launch Mishap84%
$0.28↑#13721↑0.18↑3.9 years↓
"Counter target creature or planeswalker spell. Create a 1/1 colorless Thopter artifact creature token with flying."
Repel Intruders83%
$0.12↑#276430.0518.5 years↑
"Create two 1/1 white Kithkin Soldier creature tokens if 
was spent to cast this spell. Counter up to one target creature spell if was spent to cast this spell."
was spent to cast this spell. Counter up to one target creature spell if was spent to cast this spell."
Ojutai's Command82%
$0.31↑#15617↑0.37↑11.6 years↓
"• Counter target creature spell."
Nullify82%
$0.04↓#18390↑0.0712.7 years↓
"Counter target creature or Aura spell."
Psychic Barrier80%
$0.22↑#209360.56↑15.4 years↓
"Counter target creature spell. Its controller loses 1 life."
Deny Entry80%
$0.24↑#16902↑0.17↑0.9 years↓
"Counter target creature spell. Draw a card, then discard a card."
Soul Manipulation80%
$0.16↑#8352↑0.40↑17.5 years
"• Counter target creature spell."
Long River's Pull80%
$0.38↑#1483↑0.28↑2.2 years↓
"Counter target creature spell. If the gift was promised, instead counter target spell."