Pursue the Past {R}{W}
Sorcery
You gain 2 life. You may discard a card. If you do, draw two cards.
Flashback {2}{R}{W} (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.
Survival Cache 100%
$0.27#16338
"You gain 2 life. Then if you have more life than an opponent, draw a card."
Thrilling Discovery 100%
$0.38#4048
"You gain 2 life. Then you may discard two cards. If you do, draw three cards."
Essence Pulse 99%
$0.35#13465
"You gain 2 life. Each creature gets -X/-X until end of turn, where X is the amount of life you gained this turn."
The Dragon-Kami Reborn // Dragon-Kami's Egg 98%
$0.25#16222
"You gain 2 life. Look at the top three cards of your library. Exile one of them face down with a hatching counter on it, then put the rest on the bottom of your library in any order."
Pulse of the Fields 95%
$0.59#26452
"You gain 4 life. Then if an opponent has more life than you, return this card to its owner's hand."