Arcum's Whistle 
Artifact
$0.23 #27789 0.00 31.3 years
, 
: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay 
, where X is that creature's mana value. If they don't pay, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate only before attackers are declared.Click a line or tag to filter
Cards similar to Arcum's Whistle 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.
Nettling Imp94%
$0.37↑#244860.36↑33.1 years↑
": Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only during an opponent's turn, before attackers are declared."
: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only during an opponent's turn, before attackers are declared."
Norritt90%
$0.20↓#231270.47↑31.3 years
": Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only before attackers are declared."
: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only before attackers are declared."
Siren's Call87%
$0.21↓#21832↑0.56↑33.1 years↑
"At the beginning of the next end step, destroy all non-Wall creatures that player controls that didn't attack this turn. Ignore this effect for each creature the player didn't control continuously since the beginning of the turn."
Maddening Imp83%
$1.26↑#224220.35↑28.9 years↓
": Non-Wall creatures the active player controls attack this turn if able. At the beginning of the next end step, destroy each of those creatures that didn't attack this turn. Activate only during an opponent's turn and only before combat."
: Non-Wall creatures the active player controls attack this turn if able. At the beginning of the next end step, destroy each of those creatures that didn't attack this turn. Activate only during an opponent's turn and only before combat."
Oracle en-Vec81%
$0.61↑#240310.35↑28.9 years↓
": Target opponent chooses any number of creatures they control. During that player's next turn, the chosen creatures attack if able, and other creatures can't attack. At the beginning of that turn's end step, destroy each of the chosen creatures that didn't attack this turn. Activate only during your turn."
: Target opponent chooses any number of creatures they control. During that player's next turn, the chosen creatures attack if able, and other creatures can't attack. At the beginning of that turn's end step, destroy each of the chosen creatures that didn't attack this turn. Activate only during your turn."
Alluring Siren71%
$0.09↓#20170↑0.17↑17.1 years↓
": Target creature an opponent controls attacks you this turn if able."
: Target creature an opponent controls attacks you this turn if able."
Plaguebearer70%
$36.39↑#240530.29↑28.2 years↓
"
: Destroy target nonblack creature with mana value X."
: Destroy target nonblack creature with mana value X."
Heckling Fiends70%
$0.12↓#277300.43↑14.6 years↓
"
: Target creature attacks this turn if able."
: Target creature attacks this turn if able."
Elspeth, Storm Slayer70%
$37.26↑#736↑0.87↑1.4 years↓
"−3: Destroy target creature an opponent controls with mana value 3 or greater."
Taunt70%
$2.11↑#289470.68↑29.3 years↓
"During target player's next turn, creatures that player controls attack you if able."