Sample Collector 
Creature — Troll Detective
$0.05 #29807 0.00 2.7 years
Whenever this creature attacks, you may collect evidence 3. When you do, put a +1/+1 counter on target creature you control. (To collect evidence 3, exile cards with total mana value 3 or greater from your graveyard.)
Click a line or tag to filter
Cards similar to Sample Collector 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.
Ant-Man, Colony Commander90%
$0.19↑#16051↑0.36↑0.3 years↓
"Whenever this card attacks, you may pay 
. When you do, put a +1/+1 counter on target creature."
. When you do, put a +1/+1 counter on target creature."
Merry Bards80%
$0.14↑#264900.003.1 years
"When this creature enters, you may pay . When you do, create a Young Hero Role token attached to target creature you control."
. When you do, create a Young Hero Role token attached to target creature you control."
Augusta, Order Returned79%
$0.20↑#11634↑0.13↑0.5 years↓
"Whenever this card attacks, each player exiles a card from their graveyard. When one or more nonland cards are exiled this way, put that many +1/+1 counters on target attacking creature."
Leatherhead, Iron Gator78%
$0.28↑#8748↑0.34↑0.6 years↓
"Whenever this card attacks, put two +1/+1 counters on each creature you control."
Dromoka Captain76%
$0.09↑#263780.0011.6 years↑
"Whenever this creature attacks, bolster 1."
Anointer of Valor74%
$0.11↑#21651↑0.005.9 years↑
"Whenever a creature attacks, you may pay 
. When you do, put a +1/+1 counter on that creature."
. When you do, put a +1/+1 counter on that creature."
Skyrider Patrol74%
$0.13↑#23621↑0.008.3 years↑
"At the beginning of combat on your turn, you may pay 
. When you do, put a +1/+1 counter on another target creature you control, and that creature gains flying until end of turn."
. When you do, put a +1/+1 counter on another target creature you control, and that creature gains flying until end of turn."
Tester of the Tangential73%
$0.20↑#19929↑0.000.5 years↓
"At the beginning of combat on your turn, you may pay 
. When you do, move X +1/+1 counters from this creature onto another target creature."
. When you do, move X +1/+1 counters from this creature onto another target creature."
Sutina, Speaker of the Tajuru73%
$0.34↑#9144↑0.001.9 years
"Whenever this card attacks, you may return a land you control to its owner's hand. When you do, put a +1/+1 counter on target creature."
Casey Jones, Back Alley Brute73%
$0.31↑#7179↑0.32↑0.6 years↓
"Whenever this card attacks, put a +1/+1 counter on target attacking creature."
Armasaur Guide73%
$0.09↑#17861↑0.061.9 years
"Whenever you attack with three or more creatures, put a +1/+1 counter on target creature you control."
Spined Tyrranax72%
$0.23↑#21793↑0.061.9 years
"At the beginning of combat on your turn, you may pay . When you do, put a +1/+1 counter on target creature. That creature gains trample until end of turn."
. When you do, put a +1/+1 counter on target creature. That creature gains trample until end of turn."
Rubblebelt Raiders72%
$0.13↑#18863↑0.0013.7 years↑
"Whenever this creature attacks, put a +1/+1 counter on it for each attacking creature you control."
Labyrinth Adversary72%
$0.16↑#20569↑0.35↑2.3 years
"Whenever you attack, you may pay 
. When you do, target creature can't block this turn."
. When you do, target creature can't block this turn."
The Thing72%
$0.37↑#15354↑0.42↑0.3 years↓
"Whenever this card attacks, you may pay 
. When you do, double the number of each kind of counter on any number of target permanents you control."
. When you do, double the number of each kind of counter on any number of target permanents you control."
Matt Murdock, Justice Seeker71%
$0.87↑#14339↑0.36↑0.3 years↓
"At the beginning of combat on your turn, you may pay . When you do, put a +1/+1 counter on target creature you control."
. When you do, put a +1/+1 counter on target creature you control."
Talion's Messenger71%
$0.30↑#9775↑0.003.1 years
"Whenever you attack with one or more Faeries, draw a card, then discard a card. When you discard a card this way, put a +1/+1 counter on target Faerie you control."
Thousand Moons Crackshot71%
$0.10↑#272390.12↑2.9 years
"Whenever this creature attacks, you may pay . When you do, tap target creature."
. When you do, tap target creature."
Malamet Veteran71%
$0.14↑#20294↑0.002.9 years
"Descend 4 — Whenever this creature attacks, if there are four or more permanent cards in your graveyard, put a +1/+1 counter on target creature."
Terror of Towashi70%
$0.34↑#12465↑0.003.5 years
"Whenever this creature attacks, you may pay 
. When you do, return target creature card from your graveyard to the battlefield. It's a Phyrexian in addition to its other types."
. When you do, return target creature card from your graveyard to the battlefield. It's a Phyrexian in addition to its other types."