Relic Vial 
Artifact
{2}, {T}, Sacrifice a creature: Draw a card.
As long as you control a Cleric, this artifact has "Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life."
click a line to search just that ability, click more to combine them
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.
Kheru Bloodsucker 94%
$0.11#21868
"Whenever a creature you control with toughness 4 or greater dies, each opponent loses 2 life and you gain 2 life."
Cruel Celebrant 93%
$0.93#923
"Whenever this creature or another creature or planeswalker you control dies, each opponent loses 1 life and you gain 1 life."
Kalastria Highborn 92%
#11777
"Whenever this creature or another Vampire you control dies, you may pay {B}. If you do, target player loses 2 life and you gain 2 life."
Zulaport Cutthroat 91%
$0.97#233
"Whenever this creature or another creature you control dies, each opponent loses 1 life and you gain 1 life."
Venerated Stormsinger 91%
$0.30#5577
"Whenever this creature or another creature you control dies, each opponent loses 1 life and you gain 1 life."
Kardur, Doomscourge 91%
$1.77#969
"Whenever an attacking creature dies, each opponent loses 1 life and you gain 1 life."
Bastion of Remembrance 91%
$0.30#332
"Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life."
Funeral Room // Awakening Hall 91%
$5.17#2088
"Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life."
Cauldron of Essence 91%
$2.57#3230
"Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life."
Grave Venerations 91%
$0.65#4678
"Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life."
Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel 91%
$31.56#1345
"As this creature transforms into this card, One-Winged Angel, you get an emblem with "Whenever a creature dies, target opponent loses 1 life and you gain 1 life.""
Thieving Amalgam 91%
$0.74#5238
"Whenever a creature you control but don't own dies, its owner loses 2 life and you gain 2 life."
Susurian Voidborn 90%
$0.29#6846
"Whenever this creature or another creature or artifact you control dies, target opponent loses 1 life and you gain 1 life."
Al Bhed Salvagers 90%
$0.23#6012
"Whenever this creature or another creature or artifact you control dies, target opponent loses 1 life and you gain 1 life."
Faerie Bladecrafter 88%
$4.65#5957
"When this creature dies, each opponent loses X life and you gain X life, where X is its power."
Spirit of Malevolence 88%
$0.23#25095
"When this creature dies, each opponent loses 1 life and you gain 1 life."
Pious Evangel // Wayward Disciple 88%
$0.12#18922
"Whenever this creature or another creature you control dies, target opponent loses 1 life and you gain 1 life."
+1 more matching line
Vengeful Bloodwitch 88%
$0.33#1833
"Whenever this creature or another creature you control dies, target opponent loses 1 life and you gain 1 life."