Thrull Parasite 
Creature — Thrull
$0.29 #7031 0.11 13.6 years
Extort (Whenever you cast a spell, you may pay
. If you do, each opponent loses 1 life and you gain that much life.)
Click a line or tag to filter
Cards similar to Thrull Parasite 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.
Tormented Hero70%
$0.11↓#22883↓0.25↑12.9 years
"Whenever you cast a spell that targets this creature, each opponent loses 1 life. You gain life equal to the life lost this way."
Subversion70%
$2.15↑#16719↓0.00↓27.6 years↑
"At the beginning of your upkeep, each opponent loses 1 life. You gain life equal to the life lost this way."