Swarm of Bloodflies 
Creature — Insect
$0.08 #13969 0.36 12.1 years
Flying
This creature enters with two +1/+1 counters on it.
Whenever another creature dies, put a +1/+1 counter on this creature.
Click a line or tag to filter
Cards similar to Swarm of Bloodflies 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.
Scavenger Drake100%
$0.15↑#22567↓0.06↓18.0 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Sengir Connoisseur100%
$0.18↑#20744↓0.00↓4.1 years↓
"Whenever one or more other creatures die, put a +1/+1 counter on this creature. This ability triggers only once each turn."
Rockslide Elemental99%
$0.17↑#24393↓0.18↓18.0 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Guardian Kirin98%
$0.06↓#24863↓0.05↓5.3 years↓
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Rot Shambler98%
$0.18↑#138290.3011.0 years↓
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Unruly Mob98%
$0.04↓#18200↓0.00↓15.1 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Gavony Unhallowed98%
$0.09↑#20015↓0.08↓10.2 years↓
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Lumberknot97%
$0.12↑#155490.00↓15.1 years↑
"Whenever a creature dies, put a +1/+1 counter on this creature."
Algae Gharial97%
$0.11↑#22219↓0.19↓18.0 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Vengeful Townsfolk97%
$0.13↑#20807↓0.00↓2.5 years↓
"Whenever one or more other creatures you control die, put a +1/+1 counter on this creature."
Thanos, Death's Consort96%
$2.43↑#17338↓0.14↓0.3 years↓
"Whenever another creature dies, put a +1/+1 counter on this card."
Savageborn Hydra96%
$0.45↑#117400.12↓13.5 years↑
"This creature enters with X +1/+1 counters on it."
Big Bertha95%
$0.31↑#23350↓0.380.3 years↓
"this card enters with X +1/+1 counters on her."
Voracious Vermin94%
$0.34↑#6228↑0.00↓3.1 years↓
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Judge Magister Gabranth94%
$0.19↑#9166↑0.25↓1.4 years↓
"Whenever another creature or artifact you control dies, put a +1/+1 counter on this card."
Markov Dreadknight94%
$0.15↑#23714↓0.06↓10.5 years↓
"Flying"
Mausoleum Harpy93%
$0.04↓#29425↓0.07↓8.8 years↓
"Whenever another creature you control dies, if you have the city's blessing, put a +1/+1 counter on this creature."
Shivan Devastator92%
$0.76↑#4130↑0.10↓4.5 years↓
"This creature enters with X +1/+1 counters on it."
Nimbus Swimmer92%
$0.20↑#140040.00↓13.7 years↑
"This creature enters with X +1/+1 counters on it."
Soulcatcher91%
$0.22↑#145090.00↓25.1 years↑
"Whenever a creature with flying dies, put a +1/+1 counter on this creature."