Maturation Chamber 

Artifact
€0.02 #20812 0.0 years
Whenever you cast an artifact spell, put a charge counter on this artifact.
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Cards similar to Maturation Chamber 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.
Golem Foundry94%
€0.27↑#5630↑0.2716.1 years↑
"Whenever you cast an artifact spell, you may put a charge counter on this artifact."
+1 more matching line
Myrsmith88%
€0.09↑#8078↑0.2516.1 years↑
"Whenever you cast an artifact spell, you may pay
. If you do, create a 1/1 colorless Myr artifact creature token."
Orochi Hatchery88%
€0.35↑#10861↑0.1122.1 years↑
"
,
: Create a 1/1 green Snake creature token for each charge counter on this artifact."
Riptide Replicator88%
€0.19↑#225820.0024.1 years↑
"
,
: Create an X/X creature token of the chosen color and type, where X is the number of charge counters on this artifact."
Titan Forge85%
€0.21↑#8112↑0.2215.8 years↑
"
, Remove three charge counters from this artifact: Create a 9/9 colorless Golem artifact creature token."
Urza's Factory84%
€0.17↑#4449↑0.0420.1 years↑
"
,
: Create a 2/2 colorless Assembly-Worker artifact creature token."
Envoy of Okinec Ahau83%
€0.03↑#240890.003.0 years↑
"
: Create a 1/1 colorless Gnome artifact creature token."
Oviya Pashiri, Sage Lifecrafter82%
€0.11↑#14750↑0.1410.1 years↑
"
,
: Create a 1/1 colorless Servo artifact creature token."
Efficient Construction82%
€0.21↑#2579↑0.149.8 years↑
"Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying."
Ravenous Robots82%
€2.06↑#6791↑0.350.7 years
"Whenever you cast an artifact spell, create a 1/1 colorless Robot artifact creature token."
Secluded Starforge81%
€0.30↑#3536↑0.071.3 years↑
"
,
: Create a 2/2 colorless Robot artifact creature token."
Whirlermaker78%
€0.11↑#203080.0010.1 years↑
"
,
: Create a 1/1 colorless Thopter artifact creature token with flying."
Conversion Chamber78%
€0.19↑#238760.0015.5 years↑
"
,
, Remove a charge counter from this artifact: Create a 3/3 colorless Phyrexian Golem artifact creature token."
Metrognome78%
€0.54↑#29416↓0.1228.1 years↑
"
,
: Create a 1/1 colorless Gnome artifact creature token."
Nuisance Engine77%
€0.13↑#15973↑0.0623.1 years↑
"
,
: Create a 0/1 colorless Pest artifact creature token."
Lifesmith76%
€0.12↑#30834↓0.0716.1 years↑
"Whenever you cast an artifact spell, you may pay
. If you do, you gain 3 life."
Incubation Sac76%
€0.08↑#206710.053.8 years↑
"
,
, Remove an oil counter from this artifact: Create a 3/3 colorless Phyrexian Golem artifact creature token. Activate only as a sorcery."
Birthing Boughs76%
€0.13↑#11148↑0.127.4 years↑
"
,
: Create a 2/2 colorless Shapeshifter creature token with changeling."
Patchwork Automaton75%
€0.28↑#7251↑0.004.7 years↑
"Whenever you cast an artifact spell, put a +1/+1 counter on this creature."