Cards similar to Flashfires 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.
Stench of Evil89%
$0.33↑#26689↓1.37↓31.4 years↓
"Destroy all Plains. For each land destroyed this way, this card deals 1 damage to that land's controller unless they pay
."
Cryoclasm84%
$0.16↓#28023↓0.59↓20.2 years↓
"Destroy target Plains or Island. this card deals 3 damage to that land's controller."
Impending Disaster75%
$0.92↑#12947↑1.9227.7 years↓
"At the beginning of your upkeep, if there are seven or more lands on the battlefield, sacrifice this enchantment and destroy all lands."
Myojin of Infinite Rage72%
$2.57↑#178531.21↓22.1 years↓
"Remove a divinity counter from this card: Destroy all lands."
Catastrophe72%
$3.18↑#12635↑2.0028.0 years↓
"Destroy all lands or all creatures. Creatures destroyed this way can't be regenerated."
Omen of Fire72%
$1.96↑#25766↓1.31↓30.4 years↓
"Return all Islands to their owners' hands. Each player sacrifices a Plains or a white permanent of their choice for each white permanent they control."
Reign of Chaos71%
$0.32↑#27846↓1.21↓30.0 years↓
"• Destroy target Plains and target white creature."
Raiding Party71%
$0.14↓#31286↓0.52↓32.0 years↓
"Sacrifice an Orc: Each player may tap any number of untapped white creatures they control. For each creature tapped this way, that player chooses up to two Plains. Then destroy all Plains that weren't chosen this way by any player."