Mnemonic Nexus 
Instant
$0.28 #20536 0.14 20.9 years
Each player shuffles their graveyard into their library.
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Cards similar to Mnemonic Nexus 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.
Struggle // Survive92%
$0.11↓#15486↑0.129.1 years↓
"Each player shuffles their graveyard into their library."
Reminisce91%
$0.16↓#185670.33↑23.9 years↑
"Target player shuffles their graveyard into their library."
Learn from the Past90%
$0.16↓#10590↑0.29↑11.4 years↓
"Target player shuffles their graveyard into their library."
Clear the Mind90%
$0.25↓#7187↑0.197.6 years↓
"Target player shuffles their graveyard into their library."
Thran Foundry84%
$0.45↑#203990.00↓27.2 years↑
"
, 
, Exile this artifact: Target player shuffles their graveyard into their library."
, , Exile this artifact: Target player shuffles their graveyard into their library."
Morality Shift79%
$5.68↑#13714↑0.44↑24.3 years↑
"Exchange your graveyard and library. Then shuffle your library."
Blessed Respite79%
$0.37↑#3765↑0.185.2 years↓
"Target player shuffles their graveyard into their library. Prevent all combat damage that would be dealt this turn."
Primal Command78%
$0.29↑#5620↑0.81↑18.9 years↓
"• Target player shuffles their graveyard into their library."
Cranial Archive78%
$0.29↑#14331↑0.33↑11.9 years↓
"
, Exile this artifact: Target player shuffles their graveyard into their library. Draw a card."
, Exile this artifact: Target player shuffles their graveyard into their library. Draw a card."
Temporal Cascade75%
$0.58↑#171710.79↑22.9 years↑
"• Each player shuffles their hand and graveyard into their library."
Paradigm Shift74%
$5.54↑#15833↑0.83↑29.2 years↑
"Exile all cards from your library. Then shuffle your graveyard into your library."
Quest for Ancient Secrets72%
$0.22↓#185270.0516.9 years↓
"Remove five quest counters from this enchantment and sacrifice it: Target player shuffles their graveyard into their library."
Psychic Spiral71%
$0.18↓#10721↑0.31↑13.9 years↓
"Shuffle all cards from your graveyard into your library. Target player mills that many cards."
Echo of Eons70%
$9.65↑#2609↑0.57↑7.2 years↓
"Each player shuffles their hand and graveyard into their library, then draws seven cards."
Timetwister70%
#3446↑1.54↑33.1 years↑
"Each player shuffles their hand and graveyard into their library, then draws seven cards."
Inverter of Truth70%
$1.44↑#13012↑0.65↑10.6 years↓
"When this creature enters, exile all cards from your library face down, then shuffle all cards from your graveyard into your library."
Time Reversal70%
$2.42↑#6306↑0.86↑16.1 years↓
"Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile this card."