Venser's Journal 
Artifact — Book
$8.90 #1981 0.24 16.1 years
You have no maximum hand size.
At the beginning of your upkeep, you gain 1 life for each card in your hand.
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Cards similar to Venser's Journal 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.
Ivory Tower94%
$0.20↓#5746↓0.00↓32.6 years↑
"At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4."
Sophic Centaur82%
$0.22↓#31022↓0.07↓19.7 years↑
"

,
, Discard a card: You gain 2 life for each card in your hand."
Triskaidekaphile82%
$0.85↓#1478↑0.40↑5.1 years↓
"At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game."
+1 more matching line
Descendant of Kiyomaro77%
$0.09↓#31457↓0.00↓21.4 years↑
"As long as you have more cards in hand than each opponent, this creature gets +1/+2 and has "Whenever this creature deals combat damage, you gain 3 life.""
Ivory Crane Netsuke76%
$0.28↓#24639↓0.05↓21.4 years↑
"At the beginning of your upkeep, if you have seven or more cards in hand, you gain 4 life."
Price of Knowledge76%
$2.07↓#12171↓0.3113.0 years↓
"At the beginning of each opponent's upkeep, this enchantment deals damage to that player equal to the number of cards in that player's hand."
+1 more matching line
Ajani's Mantra75%
$0.32↓#10352↓0.00↓16.3 years
"At the beginning of your upkeep, you may gain 1 life."
Doctor Octopus, Master Planner74%
$5.55↓#7177↓0.241.1 years↓
"At the beginning of your end step, if you have fewer than eight cards in hand, draw cards equal to the difference."
+1 more matching line