Malevolent Rumble 
Sorcery
$0.40 #3017 0.00 2.2 years
Reveal the top four cards of your library. You may put a permanent card from among them into your hand. Put the rest into your graveyard. Create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this token: Add 
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Cards similar to Malevolent Rumble 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.
Wasteful Harvest90%
$0.20↓#15588↓0.27↑3.8 years↑
"Mill five cards. You may put a permanent card from among the cards milled this way into your hand."
Glacial Revelation88%
$0.26↓#13938↓0.007.2 years↑
"Reveal the top six cards of your library. You may put any number of snow permanent cards from among them into your hand. Put the rest into your graveyard."
Rapid Rescue88%
$0.17↓#20871↓0.000.2 years↓
"Mill two cards. You may put a permanent card from among the milled cards into your hand. You gain 2 life."
Seed of Hope88%
$0.23↓#16417↓0.003.4 years↑
"Mill two cards. You may put a permanent card from among the milled cards into your hand. You gain 2 life."
Midnight Tilling87%
$0.27↓#8906↓0.000.6 years↓
"Mill four cards, then you may return a permanent card from among them to your hand."
Cache Grab84%
$0.30↓#5001↓0.34↑2.1 years
"Mill four cards. You may put a permanent card from among the cards milled this way into your hand. If you control a Squirrel or returned a Squirrel card to your hand this way, create a Food token."
Scattered Thoughts80%
$0.18↓#16613↓0.27↑4.8 years↑
"Look at the top four cards of your library. Put two of those cards into your hand and the rest into your graveyard."
Glimpse the Future80%
$0.08↓#26443↓0.0613.1 years↑
"Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard."
Strategic Planning80%
$0.14↓#7787↓0.25↑27.3 years↑
"Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard."
Ransack the Lab80%
$0.16↓#11707↓0.25↑7.2 years↑
"Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard."
Ancestral Memories80%
$0.25↓#20769↓0.31↑29.9 years↑
"Look at the top seven cards of your library. Put two of them into your hand and the rest into your graveyard."
Wakanda Forever!79%
$0.20↓#18451↓0.000.2 years↓
"Reveal the top six cards of your library. You may put a permanent card from among them onto the battlefield with an indestructible counter on it. You may put a permanent card from among them into your hand. Put the rest into your graveyard."
Moment of Truth78%
$0.24↓#12766↓0.15↑3.4 years↑
"Look at the top three cards of your library. Put one of those cards into your hand, one into your graveyard, and one on the bottom of your library."
Rakshasa's Bargain77%
$0.25↓#11733↓0.071.4 years
"Look at the top four cards of your library. Put two of them into your hand and the rest into your graveyard."
Commune with Evil76%
$0.21↓#10764↓0.15↑1.9 years
"Look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard. You gain 3 life."
Mulch76%
$0.18↓#4663↓0.33↑28.5 years↑
"Reveal the top four cards of your library. Put all land cards revealed this way into your hand and the rest into your graveyard."
Genesis Wave76%
$0.35↓#1364↑0.49↑15.9 years↑
"Reveal the top X cards of your library. You may put any number of permanent cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard."
Boughside Wanderers74%
$0.14↓#22760↓0.000.1 years↓
"When this creature enters, look at the top four cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in a random order."
Sultai Soothsayer74%
$0.08↓#25148↓0.0011.9 years↑
"When this creature enters, look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard."
Organ Hoarder74%
$0.08↓#21791↓0.24↑4.9 years↑
"When this creature enters, look at the top three cards of your library, then put one of them into your hand and the rest into your graveyard."