Simic Fluxmage 

Creature — Merfolk Wizard
$0.08 #23500 0.06 13.6 years
Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
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Cards similar to Simic Fluxmage 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.
Cytoplast Root-Kin94%
$0.13↑#18314↑0.1320.3 years↑
"
: Move a +1/+1 counter from target creature you control onto this creature."
Steel Dromedary89%
$0.17↑#235920.005.2 years↓
"At the beginning of combat on your turn, you may move a +1/+1 counter from this creature onto target creature."
Combine Guildmage88%
$0.16↑#17933↑0.007.6 years↓
"
,
: Move a +1/+1 counter from target creature you control onto another target creature you control."
Explorer's Cache88%
$0.17↑#13929↑0.002.8 years↓
"
: Move a +1/+1 counter from this artifact onto target creature. Activate only as a sorcery."