Oath of Lieges 

Enchantment
$4.10 #12636 0.45 28.2 years
At the beginning of each player's upkeep, that player chooses target player who controls more lands than they do and is their opponent. The first player may search their library for a basic land card, put that card onto the battlefield, then shuffle.
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Cards similar to Oath of Lieges 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.
Scholarship Sponsor92%
$0.35↓#126120.14↓5.4 years↓
"When this creature enters, each player who controls fewer lands than the player who controls the most lands searches their library for a number of basic land cards less than or equal to the difference, puts those cards onto the battlefield tapped, then shuffles."
New Frontiers86%
$5.16↑#137850.28↓24.9 years↓
"Each player may search their library for up to X basic land cards and put them onto the battlefield tapped. Then each player who searched their library this way shuffles."
Collective Voyage82%
$6.29↑#4546↑0.4615.2 years↓
"Starting with you, each player may pay any amount of mana. Each player searches their library for up to X basic land cards, where X is the total amount of mana paid this way, puts them onto the battlefield tapped, then shuffles."
Sunstar Expansionist80%
$0.17↓#17176↓0.01↓1.1 years↓
"When this creature enters, if an opponent controls more lands than you, create a Lander token."
Loyal Warhound80%
$0.47↓#1636↑0.13↓5.1 years↓
"When this creature enters, if an opponent controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle."
Veteran Explorer80%
$0.27↓#6116↑0.35↓29.2 years↑
"When this creature dies, each player may search their library for up to two basic land cards, put them onto the battlefield, then shuffle."
Scouting Hawk80%
$0.25↓#9434↑0.21↓4.2 years↓
"When this creature enters, if an opponent controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle."
Turtle Tracks80%
$0.20↓#25651↓0.00↓0.5 years↓
"Any number of target players may each search their library for a basic land card, put it onto the battlefield under their control, then shuffle."
Keeper of the Accord79%
$0.48↓#1258↑0.24↓5.8 years↓
"At the beginning of each opponent's end step, if that player controls more lands than you, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle."
Land Tax78%
$17.25↑#369↑0.80↑32.3 years↑
"At the beginning of your upkeep, if an opponent controls more lands than you, you may search your library for up to three basic land cards, reveal them, put them into your hand, then shuffle."
Avatar of Growth78%
$25.83↑#117580.67↑7.8 years↓
"When this creature enters, each player searches their library for up to two basic land cards, puts them onto the battlefield, then shuffles."
Old-Growth Dryads77%
$0.24↓#20137↓0.538.9 years↓
"When this creature enters, each opponent may search their library for a basic land card, put it onto the battlefield tapped, then shuffle."
Surveyor's Scope75%
$3.99↓#7834↑0.13↓12.8 years↓
"
, Exile this artifact: Search your library for up to X basic land cards, where X is the number of players who control at least two more lands than you. Put those cards onto the battlefield, then shuffle."
Knight of the White Orchid74%
$0.80↓#644↑0.17↓17.9 years↓
"When this creature enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle."
Rootweaver Druid74%
$0.30↓#7355↑0.69↑5.8 years↓
"When this creature enters, each opponent may search their library for up to three basic land cards. They each put one of those cards onto the battlefield tapped under your control and the rest onto the battlefield tapped under their control. Then each player who searched their library this way shuffles."
Hired Giant74%
$0.37↓#17353↓0.00↓26.9 years↓
"When this creature enters, each other player may search their library for a land card and put that card onto the battlefield. Then each player who searched their library this way shuffles."
Fertilid74%
$0.12↓#2983↑0.18↓18.6 years↓
"
, Remove a +1/+1 counter from this creature: Target player searches their library for a basic land card, puts it onto the battlefield tapped, then shuffles."
Space Marine Scout74%
$0.63↓#101940.35↓3.9 years↓
"When this creature enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle."
Aerial Surveyor73%
$1.13↓#5000↑0.19↓4.5 years↓
"Whenever this Vehicle attacks, if defending player controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle."