Sylvan Might 

Instant
Target creature gets +2/+2 and gains trample until end of turn.
Flashback {2}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
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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.
Distemper of the Blood 100%
$0.07#15498
"Target creature gets +2/+2 and gains trample until end of turn."
Rush of Adrenaline 99%
$0.15#13018
"Target creature gets +2/+1 and gains trample until end of turn."
Visions of Dominance 92%
$0.94#7545
"Flashback {8}{G}{G}. This spell costs {X} less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone."
Beast Mode 91%
$0.20#29269
"Target creature gets +2/+2 and gains trample until end of turn. Also put a +1/+1 counter on that creature if this spell was cast using teamwork."
Enlarge 90%
$0.23#15354
"Target creature gets +7/+7 and gains trample until end of turn. It must be blocked this turn if able."