Blood Tyrant 



Creature — Vampire
Flying, trample
At the beginning of your upkeep, each player loses 1 life. Put a +1/+1 counter on this creature for each 1 life lost this way.
Whenever a player loses the game, put five +1/+1 counters on this creature.
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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.
Pillar Tombs of Aku 81%
$1.05#29286
"At the beginning of each player's upkeep, that player may sacrifice a creature of their choice. If that player doesn't, they lose 5 life and you sacrifice this enchantment."
Seizan, Perverter of Truth 80%
$2.06#3572
"At the beginning of each player's upkeep, that player loses 2 life and draws two cards."