Blitzball Stadium 

Artifact
$0.25 #6614 0.20 1.4 years
When this artifact enters, support X. (Put a +1/+1 counter on each of up to X target creatures.)
Go for the Goal! —
,
: Until end of turn, target creature gains "Whenever this creature deals combat damage to a player, draw a card for each kind of counter on it" and it can't be blocked this turn.
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Cards similar to Blitzball Stadium 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.
Generous Patron84%
$0.41↑#3325↑0.07↓8.4 years↑
"When this creature enters, support 2."
+1 more matching line
Deepfathom Skulker78%
$0.34↑#71250.00↓10.7 years↑
"Whenever a creature you control deals combat damage to a player, you may draw a card."
Open into Wonder77%
$0.22↓#77490.219.5 years↑
"X target creatures can't be blocked this turn. Until end of turn, those creatures gain "Whenever this creature deals combat damage to a player, draw a card.""
Coastal Piracy76%
$0.29↑#1517↑0.1927.0 years↑
"Whenever a creature you control deals combat damage to an opponent, you may draw a card."
Nine-Tail White Fox76%
$0.22↓#22246↓0.10↓8.3 years↑
"Whenever this creature deals combat damage to a player, draw a card."
Stealer of Secrets76%
$0.05↓#21082↓0.2914.0 years↑
"Whenever this creature deals combat damage to a player, draw a card."
Scroll Thief76%
$0.06↓#17346↓0.00↓16.3 years↑
"Whenever this creature deals combat damage to a player, draw a card."
Bred for the Hunt74%
$0.20↓#2678↑0.2013.5 years↑
"Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, you may draw a card."
Neurok Commando74%
$0.13↓#19219↓0.41↑15.7 years↑
"Whenever this creature deals combat damage to a player, you may draw a card."
Waterbender Ascension74%
$0.74↑#3694↑0.210.9 years
"Whenever a creature you control deals combat damage to a player, put a quest counter on this enchantment. Then if it has four or more quest counters on it, draw a card."