The Motherlode, Excavator {3}{R}{R}
Legendary Artifact Creature — Robot
When The Motherlode enters, choose target opponent. You get an amount of {E} (energy counters) equal to the number of nonbasic lands that player controls.
Whenever The Motherlode attacks, you may pay {E}{E}{E}{E}. When you do, destroy target nonbasic land defending player controls, and creatures that player controls without flying can't block this turn.
click a line to search just that ability, click more to combine them
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.
Ty Lee, Artful Acrobat 91%
$0.18#11774
"Whenever this card attacks, you may pay {1}. When you do, target creature can't block this turn."
Maulfist Doorbuster 85%
$0.10#25757
"Whenever this creature attacks, you may pay {E}. If you do, target creature can't block this turn."
Labyrinth Adversary 83%
$0.09#19580
"Whenever you attack, you may pay {1}{R}. When you do, target creature can't block this turn."