Gamma Grotesque 

Creature — Gamma Horror Villain
$0.27 #21981 0.14 0.3 years
Vigilance (Attacking doesn't cause this creature to tap.)
Power-up — 

: Put three +1/+1 counters on this creature. Then draw a card for each creature you control with a counter on it. (Activate each power-up ability only once. Reduce the cost by its mana cost if it entered this turn.)
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Cards similar to Gamma Grotesque 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.
Bold Biochemist96%
$0.08↓#26539↓0.04↓0.3 years
"Power-up — 
: Put a +1/+1 counter on this creature and draw two cards."
Goliath, Mass Manipulator94%
$0.23↓#227500.150.3 years
"Power-up — 
: Put two +1/+1 counters on this card. Then draw a card for each creature you control with power 4 or greater."
Serpent Specialist90%
$0.19↓#17180↑0.200.3 years
"Power-up — 
: Put two +1/+1 counters on this creature."
Aerial Doombot90%
$0.15↓#187290.150.3 years
"Power-up — 
: Put three +1/+1 counters on this creature."
Volcanic Villain90%
$0.05↓#247950.150.3 years
"Power-up — 
: Put two +1/+1 counters on this creature."
Skystreak Engineer88%
$0.06↓#259050.25↑1.7 years↑
"Exhaust — 
: Put two +1/+1 counters on this creature."
Hazard of the Dunes88%
$0.17↓#178270.171.7 years↑
"Exhaust — 
: Put three +1/+1 counters on this creature."
Prowcatcher Specialist87%
$0.09↓#206140.111.7 years↑
"Exhaust — 
: Put two +1/+1 counters on this creature."
Namora, the Sea Queen86%
$0.29↑#249720.240.3 years
"Power-up — 
: Put a +1/+1 counter on this card. Create two 1/1 blue Merfolk creature tokens."
Ultron Drone86%
$0.19↓#16367↑0.28↑0.3 years
"Power-up —
: Put two +1/+1 counters on this creature and create a 2/2 colorless Robot Villain artifact creature token."
Peema Trailblazer84%
$0.16↓#9656↑0.121.7 years↑
"Exhaust — Pay six
: Put two +1/+1 counters on this creature. Then draw cards equal to the greatest power among creatures you control."
Mild-Mannered Librarian84%
$0.13↓#219140.133.9 years↑
"
: This creature becomes a Werewolf. Put two +1/+1 counters on it and you draw a card. Activate only once."
Brawn, Amadeus Cho84%
$0.24↓#221160.27↑0.3 years
"Power-up — 
: Put a +1/+1 counter on this card for each card in your hand."
Shang-Chi, Martial Mentor84%
$0.69↑#17182↑0.51↑0.3 years
"Power-up — 

: Put three +1/+1 counters on this card."
Greasewrench Goblin84%
$0.24↓#176740.00↓1.7 years↑
"Exhaust — 
: Discard up to two cards, then draw that many cards. Put a +1/+1 counter on this creature."
Mindspring Merfolk84%
$0.38↑#10287↑0.00↓1.7 years↑
"Exhaust — 

,
: Draw X cards. Put a +1/+1 counter on each Merfolk creature you control."
Stampeding Scurryfoot84%
$0.10↓#220350.00↓1.7 years↑
"Exhaust — 
: Put a +1/+1 counter on this creature. Create a 3/3 green Elephant creature token."
Keen Buccaneer84%
$0.19↓#198730.00↓1.7 years↑
"Exhaust — 
: Draw a card, then discard a card. Put a +1/+1 counter on this creature."
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