Angrath's Marauders {5}{R}{R}
Creature — Human Pirate
If a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.
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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.
Dictate of the Twin Gods 95%
$2.26#2323
"If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead."
Furnace of Rath 95%
$6.81#4511
"If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead."
The Rollercrusher Ride 95%
$0.64#5573
"If a source you control would deal noncombat damage to a permanent or player while there are four or more card types among cards in your graveyard, it deals double that damage instead."
Solphim, Mayhem Dominus 91%
$27.81#872
"If a source you control would deal noncombat damage to an opponent or a permanent an opponent controls, it deals double that damage to that player or permanent instead."
Fiery Emancipation 91%
$15.25#847
"If a source you control would deal damage to a permanent or player, it deals triple that damage to that permanent or player instead."
Twinflame Tyrant 89%
$27.16#845
"If a source you control would deal damage to an opponent or a permanent an opponent controls, it deals double that damage instead."
Gratuitous Violence 89%
#1490
"If a creature you control would deal damage to a permanent or player, it deals double that damage instead."
City on Fire 89%
$11.46#833
"If a source you control would deal damage to a permanent or player, it deals triple that damage instead."
Gisela, Blade of Goldnight 89%
$5.39#1126
"If a source would deal damage to an opponent or a permanent an opponent controls, that source deals double that damage to that player or permanent instead."
Sawhorn Nemesis 87%
$2.16#6288
"If a source would deal damage to the chosen player or a permanent they control, it deals double that damage instead."
Bitter Feud 87%
$0.62#14877
"If a source controlled by one of the chosen players would deal damage to the other chosen player or a permanent that player controls, that source deals double that damage to that player or permanent instead."
Obosh, the Preypiercer 87%
$0.29#9900
"If a source you control with an odd mana value would deal damage to a permanent or player, it deals double that damage to that permanent or player instead."
Goldnight Castigator 84%
$0.61#12095
"If a source would deal damage to you, it deals double that damage to you instead."
Fiendish Duo 82%
$3.26#3556
"If a source would deal damage to an opponent, it deals double that damage to that player instead."
Calamity Bearer 81%
$0.32#9103
"If a Giant source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead."
Doubling Season 80%
$32.65#192
"If an effect would put one or more counters on a permanent you control, it puts twice that many of those counters on that permanent instead."