Aquastrand Spider 

Creature — Spider Mutant
$0.12 #17764 0.00 20.5 years
Graft 2 (This creature enters with two +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)
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Cards similar to Aquastrand Spider 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.
Simic Fluxmage80%
$0.07↓#23828↓0.0713.7 years↓
"
,
: Move a +1/+1 counter from this creature onto target creature."
Longshot Squad78%
$0.14↑#12020↑0.0612.1 years↓
"Each creature you control with a +1/+1 counter on it has reach."
Daghatar the Adamant78%
$0.18↑#24213↓0.0011.7 years↓
"

: Move a +1/+1 counter from target creature onto a second target creature."
Steel Dromedary77%
$0.21↑#23928↓0.005.3 years↓
"At the beginning of combat on your turn, you may move a +1/+1 counter from this creature onto target creature."
Combine Guildmage76%
$0.15↑#182470.007.7 years↓
"
,
: Move a +1/+1 counter from target creature you control onto another target creature you control."
Ainok Artillerist76%
$0.11↓#24260↓0.0011.6 years↓
"This creature has reach as long as it has a +1/+1 counter on it."
Scrounging Bandar74%
$0.15↑#8879↑0.009.7 years↓
"This creature enters with two +1/+1 counters on it."
+1 more matching line