Bristly Bill, Spine Sower 

Legendary Creature — Plant Druid
$38.87 #923 0.96 2.4 years
Landfall — Whenever a land you control enters, put a +1/+1 counter on target creature.
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Cards similar to Bristly Bill, Spine Sower 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.
Mossborn Hydra91%
$12.69↓#7770.75↓1.8 years
"Whenever a land you control enters, double the number of +1/+1 counters on this creature."
Dueling Coach90%
$0.04↓#23769↓0.41↓5.4 years↑
"
,
: Put a +1/+1 counter on each creature you control with a +1/+1 counter on it."
+1 more matching line
Scythecat Cub89%
$25.02↓#2878↓0.66↓1.8 years
"Whenever a land you control enters, put a +1/+1 counter on target creature you control. If this is the second time this ability has resolved this turn, double the number of +1/+1 counters on that creature instead."
Ascendant Acolyte86%
$0.34↓#10992↓0.06↓4.5 years↑
"At the beginning of your upkeep, double the number of +1/+1 counters on this creature."
Kalonian Hydra86%
$5.87↓#1120↓0.45↓13.1 years↑
"Whenever this creature attacks, double the number of +1/+1 counters on each creature you control."
Dragonsguard Elite86%
$0.24↓#16338↓0.29↓5.4 years↑
"

: Double the number of +1/+1 counters on this creature."
Gilder Bairn85%
$0.85↓#16903↓0.24↓18.1 years↑
"
,
: Double the number of each kind of counter on target permanent."
Hulk, Strongest There Is84%
$0.82↓#16769↓0.00↓0.2 years↓
"At the beginning of your upkeep, double the number of +1/+1 counters on each Gamma creature you control."
Evolution Vat84%
$0.93↓#25185↓0.33↓20.3 years↑
"
,
: Tap target creature and put a +1/+1 counter on it. Until end of turn, that creature gains "

: Double the number of +1/+1 counters on this creature.""
Primordial Hydra83%
$1.39↓#2463↓0.45↓15.1 years↑
"At the beginning of your upkeep, double the number of +1/+1 counters on this creature."
Byrke, Long Ear of the Law83%
$6.85↓#5927↓0.29↓2.1 years
"Whenever a creature you control with a +1/+1 counter on it attacks, double the number of +1/+1 counters on it."
Hydra's Growth82%
$1.08↓#2107↓0.34↓6.6 years↑
"At the beginning of your upkeep, double the number of +1/+1 counters on enchanted creature."
She-Hulk, Attorney-at-Law80%
$0.27↓#24738↓0.00↓0.2 years↓
"Power-up — 
: Put a +1/+1 counter on this card. Then double the number of +1/+1 counters on each creature you control."
Ornery Tumblewagg80%
$0.34↓#4990↓0.902.4 years
"At the beginning of combat on your turn, put a +1/+1 counter on target creature."
Aetheric Amplifier80%
$0.51↓#2459↓0.42↓1.6 years
"• Double the number of each kind of counter you have."
Court of Garenbrig80%
$16.53↓#2224↓0.40↓3.0 years
"At the beginning of your upkeep, distribute two +1/+1 counters among up to two target creatures. Then if you're the monarch, double the number of +1/+1 counters on each creature you control."
Fangs of Kalonia80%
$0.34↓#2507↓0.25↓2.2 years
"Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on each creature that had a +1/+1 counter put on it this way."
Vorel of the Hull Clade80%
$0.31↓#3219↓0.44↓13.3 years↑
"
,
: Double the number of each kind of counter on target artifact, creature, or land."