Shipwreck Moray 

Creature — Fish
When this creature enters, you get {E}{E}{E}{E} (four energy counters).
Pay {E}: This creature gets +2/-2 until end of turn.
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Cards that do something similar 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.
Emissary of Soulfire 98%
$0.14#18072
"When this creature enters, you get {E}{E}{E} ."
+1 more matching line
Bristling Hydra 98%
$0.14#17731
"When this creature enters, you get {E}{E}{E} ."
+1 more matching line
Aether Theorist 98%
$0.15#16788
"When this creature enters, you get {E}{E}{E} ."
+1 more matching line
Multiform Wonder 98%
$0.23#19044
"When this creature enters, you get {E}{E}{E} ."
+1 more matching line
Electrostatic Pummeler 98%
$0.33#10914
"When this creature enters, you get {E}{E}{E} ."
+1 more matching line