Biomancer's Familiar 
Creature — Mutant
$1.87 #3144 0.30 7.6 years
Activated abilities of creatures you control cost 
less to activate. This effect can't reduce the mana in that cost to less than one mana.
less to activate. This effect can't reduce the mana in that cost to less than one mana.
: The next time target creature adapts this turn, it adapts as though it had no +1/+1 counters on it.Click a line or tag to filter
Cards similar to Biomancer's Familiar 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.
Training Grounds100%
$8.21↑#1049↑0.46↑16.4 years↑
"Activated abilities of creatures you control cost less to activate. This effect can't reduce the mana in that cost to less than one mana."
less to activate. This effect can't reduce the mana in that cost to less than one mana."
Heartstone98%
$1.63↓#3889↓0.2128.5 years↑
"Activated abilities of creatures cost 
less to activate. This effect can't reduce the mana in that cost to less than one mana."
less to activate. This effect can't reduce the mana in that cost to less than one mana."
Zirda, the Dawnwaker94%
$1.88↑#33080.49↑6.4 years↓
"Abilities you activate that aren't mana abilities cost less to activate. This effect can't reduce the mana in that cost to less than one mana."
less to activate. This effect can't reduce the mana in that cost to less than one mana."
Forensic Gadgeteer91%
$1.83↓#1391↑0.302.6 years↓
"Activated abilities of artifacts you control cost less to activate. This effect can't reduce the mana in that cost to less than one mana."
less to activate. This effect can't reduce the mana in that cost to less than one mana."
Professor Hojo89%
$0.22↓#5246↓0.321.2 years↓
"The first activated ability you activate during your turn that targets a creature you control costs less to activate."
less to activate."
Convergence of Dominion88%
$1.06↓#11795↓0.363.9 years↓
"As long as you control your commander, activated abilities of cards in your graveyard cost less to activate. This effect can't reduce the mana in that ability's activation cost to less than one mana."
less to activate. This effect can't reduce the mana in that ability's activation cost to less than one mana."
Mutagen Man, Living Ooze87%
$1.74↓#6510↓0.00↓0.5 years↓
"Activated abilities of artifact tokens you control cost less to activate."
less to activate."
Embalmer's Tools86%
$0.18↓#12903↓0.06↓9.4 years↑
"Activated abilities of creature cards in your graveyard cost less to activate."
less to activate."
Power Artifact86%
$184.08↑#9668↓0.47↑32.5 years↑
"Enchanted artifact's activated abilities cost less to activate. This effect can't reduce the mana in that cost to less than one mana."
less to activate. This effect can't reduce the mana in that cost to less than one mana."
Agatha of the Vile Cauldron85%
$2.45↑#6111↓0.58↑3.0 years↓
"Activated abilities of creatures you control cost 
less to activate, where X is Agatha's power. This effect can't reduce the mana in that cost to less than one mana."
less to activate, where X is Agatha's power. This effect can't reduce the mana in that cost to less than one mana."
Fluctuator82%
$0.95↓#8309↓0.12↓27.9 years↑
"Cycling abilities you activate cost less to activate."
less to activate."
Blossoming Tortoise80%
$5.37↑#32640.353.0 years↓
"Activated abilities of lands you control cost less to activate."
less to activate."
Tezzeret, Betrayer of Flesh78%
$0.46↓#3960↓0.304.5 years↓
"The first activated ability of an artifact you activate each turn costs less to activate."
less to activate."
Magewright's Stone75%
$9.09↑#28870.2020.3 years↑
", : Untap target creature that has an activated ability with in its cost."
, : Untap target creature that has an activated ability with in its cost."
Hulk, Gamma Goliath74%
$0.24↓#17126↓0.00↓0.2 years↓
"Power-up abilities of other creatures you control cost 
less to activate."
less to activate."
Sam, Loyal Attendant72%
$0.44↓#6537↓0.353.2 years↓
"Activated abilities of Foods you control cost less to activate."
less to activate."
Boom Scholar72%
$0.15↓#21703↓0.12↓1.6 years↓
"Exhaust abilities of other permanents you control cost less to activate."
less to activate."
Silver-Fur Master70%
$0.36↓#28450.234.5 years↓
"Ninjutsu abilities you activate cost less to activate."
less to activate."