Ward of Bones 
Artifact
$28.36 #12289 1.28 18.1 years
Each opponent who controls more creatures than you can't cast creature spells. The same is true for artifacts and enchantments.
Each opponent who controls more lands than you can't play lands.
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Cards similar to Ward of Bones 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.
Damping Engine84%
$1.16↓#22460↓0.96↓27.6 years↑
"A player who controls more permanents than each other player can't play lands or cast artifact, creature, or enchantment spells. That player may sacrifice a permanent of their choice for that player to ignore this effect until end of turn."
Grand Abolisher74%
$17.78↓#250↑1.3815.1 years↓
"During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments."
Aura of Silence72%
$7.05↓#2174↑1.2229.2 years↑
"Artifact and enchantment spells your opponents cast cost 
more to cast."
more to cast."
Myrel, Shield of Argive72%
$17.84↓#1525↑0.91↓3.8 years↓
"During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments."
Territorial Dispute72%
$0.42↓#28843↓1.39↑26.9 years↑
"Players can't play lands."
Worms of the Earth70%
$6.69↓#27810↓0.88↓32.1 years↑
"Players can't play lands."