War's Toll {3}{R}
Enchantment
Whenever an opponent taps a land for mana, tap all lands that player controls.
If a creature an opponent controls attacks, all creatures that opponent controls attack if able.
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Cards that do something similar 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.
Magnetic Web 86%
$0.70#20119
"If a creature with a magnet counter on it attacks, all creatures with magnet counters on them attack if able."
Mana Web 85%
$17.97#11400
"Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce."
Public Enemy 85%
$0.27#10810
"All creatures attack enchanted creature's controller each combat if able."
Mogg Toady 82%
$0.11#30572
"This creature can't attack unless you control more creatures than defending player."
Goblin Goon 82%
$0.35#20282
"This creature can't attack unless you control more creatures than defending player."
Avatar of Slaughter 82%
$0.37#7506
"All creatures have double strike and attack each combat if able."