Tomb of Horrors Adventurer {5}{U}
Creature — Elf Monk
When this creature enters, you take the initiative.
Whenever you cast your second spell each turn, copy it. If you've completed a dungeon, copy that spell twice instead. You may choose new targets for the copies. (A copy of a permanent spell becomes a token.)
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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.
Storm of Saruman 98%
$3.01#3593
"Whenever you cast your second spell each turn, copy it, except the copy isn't legendary. You may choose new targets for the copy."
Shiko and Narset, Unified 91%
$0.90#8322
"Whenever you cast your second spell each turn, copy that spell if it targets a permanent or player, and you may choose new targets for the copy. If you don't copy a spell this way, draw a card."
The Clone Saga 89%
$0.33#9803
"When you next cast a creature spell this turn, copy it, except the copy isn't legendary."
Kalamax, the Stormsire 89%
$0.66#9477
"Whenever you cast your first instant spell each turn, if this card is tapped, copy that spell. You may choose new targets for the copy."
Spider-Verse 89%
$1.16#8465
"Whenever you cast a spell from anywhere other than your hand, you may copy it. If you do, you may choose new targets for the copy. If the copy is a permanent spell, it gains haste. Do this only once each turn."
Sage of the Skies 89%
$0.54#12695
"When you cast this spell, if you've cast another spell this turn, copy this spell."
Echo Storm 88%
$0.30#11252
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies."
Fury Storm 88%
$4.47#7420
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies."
Cosmic Crucible 88%
$0.36#18628
"Whenever you cast a noncreature spell, you may copy it. You may choose new targets for the copy. Do this only once each turn."
Hatut Zeraze Strike Force 87%
$0.74#21321
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Genesis Storm 87%
$0.68#13220
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Skull Storm 87%
$0.87#12613
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Empyrial Storm 87%
$0.41#18267
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Owlin Spiralmancer 87%
$0.27#9441
"Whenever you cast your first spell with {X} in its mana cost each turn, you may copy it. You may choose new targets for the copy."
The Enigma Jewel // Locus of Enlightenment 87%
$1.20#6378
"Whenever you activate an ability that isn't a mana ability, copy it. You may choose new targets for the copy."
Repeated Reverberation 87%
$0.35#7749
"When you next cast an instant spell, cast a sorcery spell, or activate a loyalty ability this turn, copy that spell or ability twice. You may choose new targets for the copies."
Twinning Staff 87%
$20.59#1706
"If you would copy a spell one or more times, instead copy it that many times plus an additional time. You may choose new targets for the additional copy."
Spellweaver Helix 86%
$2.16#10908
"Whenever a player casts a card, if it has the same name as one of the cards exiled with this artifact, you may copy the other. If you do, you may cast the copy without paying its mana cost."