Warlock Class {B}
Enchantment — Class
(Gain the next level as a sorcery to add its ability.)
At the beginning of your end step, if a creature died this turn, each opponent loses 1 life.
{1}{B}: Level 2
When this Class becomes level 2, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
{6}{B}: Level 3
At the beginning of your end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)
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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.
Wound Reflection 99%
$13.26#1935
"At the beginning of each end step, each opponent loses life equal to the life they lost this turn."
Archfiend of Despair 93%
$22.94#2742
"At the beginning of each end step, each opponent loses life equal to the life that player lost this turn."
God-Pharaoh's Statue 92%
$0.80#2398
"At the beginning of your end step, each opponent loses 1 life."
Vrock 92%
$0.20#16718
"At the beginning of your end step, if a permanent you controlled left the battlefield this turn, each opponent loses 3 life."
The Celestial Toymaker 91%
$30.39#16590
"At the beginning of each end step, each opponent loses 2 life for each spell or ability that caused one or more players to guess or to group cards or permanents into a pile this turn."
+1 more matching line
Great Unclean One 91%
$5.60#5110
"At the beginning of your end step, each opponent loses 2 life. Then for each opponent who has less life than you, create a 1/3 black Demon creature token named Plaguebearer of Nurgle."
Perforating Artist 90%
$0.26#6783
"At the beginning of your end step, if you attacked this turn, each opponent loses 3 life unless that player sacrifices a nonland permanent of their choice or discards a card."
Fandaniel, Telophoroi Ascian 89%
$0.32#3498
"At the beginning of your end step, each opponent may sacrifice a nontoken creature of their choice. Each opponent who doesn't loses 2 life for each instant and sorcery card in your graveyard."
The Chain Veil 86%
$5.64#2914
"At the beginning of your end step, if you didn't activate a loyalty ability of a planeswalker this turn, you lose 2 life."
Sarevok, Deathbringer 86%
$0.17#13864
"At the beginning of each player's end step, if no permanents left the battlefield this turn, that player loses X life, where X is this card's power."
Bellowing Mauler 85%
$0.27#18264
"At the beginning of your end step, each player loses 4 life unless they sacrifice a nontoken creature of their choice."
Artificer Class 84%
$15.06#4038
"When this Class becomes level 2, reveal cards from the top of your library until you reveal an artifact card. Put that card into your hand and the rest on the bottom of your library in a random order."
Cloistered Youth // Unholy Fiend 84%
$0.07#30868
"At the beginning of your end step, you lose 1 life."
Lunar Convocation 84%
$0.70#3040
"At the beginning of your end step, if you gained life this turn, each opponent loses 1 life."
+1 more matching line
Nezumi Shortfang // Stabwhisker the Odious 83%
$2.29#15966
"At the beginning of each opponent's upkeep, that player loses 1 life for each card fewer than three in their hand."
+1 more matching line