Oblivious Bookworm 
Creature — Human Wizard
$0.18 #13106 0.00 2.1 years
At the beginning of your end step, you may draw a card. If you do, discard a card unless a permanent entered the battlefield face down under your control this turn or you turned a permanent face up this turn.
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Cards similar to Oblivious Bookworm expected a card that isn't here?
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"Whenever a permanent you control is turned face up, draw a card."
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"Whenever a face-down creature you control enters, draw a card."
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$0.18#15954↓0.002.7 years
"At the beginning of your end step, if a face-down creature entered the battlefield under your control this turn, put a +1/+1 counter on this creature."
Lady of Laughter72%
$0.33↑#19883↓0.073.1 years↑
"At the beginning of your end step, if two or more nonland permanents entered the battlefield under your control this turn, draw a card."
Rook Turret71%
$0.14↓#8310↑0.061.4 years
"Whenever another artifact you control enters, you may draw a card. If you do, discard a card."
Skyswimmer Koi71%
$0.16↓#17437↓0.004.7 years↑
"Whenever an artifact you control enters, you may draw a card. If you do, discard a card."
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"
: Draw a card, then discard a card."
: Draw a card, then discard a card."
Thought Courier71%
$0.17↓#10431↑0.0022.4 years↑
": Draw a card, then discard a card."
: Draw a card, then discard a card."
Dragonborn Looter70%
$0.25↑#130850.064.4 years↑
"
, : Draw a card, then discard a card."
, : Draw a card, then discard a card."
Facet Reader70%
$0.08↓#23581↓0.066.5 years↑
", : Draw a card, then discard a card."
, : Draw a card, then discard a card."
Captain of Umbar70%
$0.09↓#17321↓0.18↑3.3 years↑
", : Draw a card, then discard a card."
, : Draw a card, then discard a card."
Shoal Kraken70%
$0.11↓#22815↓0.006.7 years↑
"Whenever an enchantment you control enters, you may draw a card. If you do, discard a card."
Marauding Looter70%
$0.25↑#21835↓0.069.1 years↑
"At the beginning of your end step, if you attacked this turn, you may draw a card. If you do, discard a card."
Furtive Analyst70%
$0.04↓#27448↓0.12↑3.5 years↑
"
, : Draw a card, then discard a card."
, : Draw a card, then discard a card."
Erratic Visionary70%
$0.05↓#25717↓0.007.5 years↑
", : Draw a card, then discard a card."
, : Draw a card, then discard a card."
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", : Draw a card, then discard a card."
, : Draw a card, then discard a card."
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$0.03↓#24478↓0.076.3 years↑
", : Draw a card, then discard a card."
, : Draw a card, then discard a card."
Research Assistant70%
$0.08↓#30790↓0.0012.3 years↑
"
, : Draw a card, then discard a card."
, : Draw a card, then discard a card."
Customs Depot70%
$0.17↓#27543↓0.0627.0 years↑
"Whenever you cast a creature spell, you may pay . If you do, draw a card, then discard a card."
. If you do, draw a card, then discard a card."