Shape Stealer 
Creature — Shapeshifter Spirit
$0.34 #25994 0.25 21.4 years
Whenever this creature blocks or becomes blocked by a creature, this creature's base power and toughness become equal to that creature's power and toughness until end of turn.
Click a line or tag to filter
Cards similar to Shape Stealer 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.
Serene Master92%
$0.67↑#19258↑0.00↓13.0 years↓
"Whenever this creature blocks, exchange its power and the power of target creature it's blocking until end of combat."
Sentinel88%
$0.40↑#249120.36↑32.4 years↑
"
: This creature's base toughness becomes equal to 1 plus the power of target creature blocking or blocked by this creature."
: This creature's base toughness becomes equal to 1 plus the power of target creature blocking or blocked by this creature."
Riptide Mangler86%
$0.35↑#288050.2423.7 years↑
"
: This creature's base power becomes equal to target creature's power."
: This creature's base power becomes equal to target creature's power."
Sworn Defender82%
$1.01↑#290950.00↓30.4 years↑
": This creature's power becomes the toughness of target creature blocking or being blocked by this creature minus 1 until end of turn, and its toughness becomes 1 plus the power of that creature until end of turn."
: This creature's power becomes the toughness of target creature blocking or being blocked by this creature minus 1 until end of turn, and its toughness becomes 1 plus the power of that creature until end of turn."
Engulfing Slagwurm80%
$0.57↑#10411↑0.41↑16.1 years↓
"Whenever this creature blocks or becomes blocked by a creature, destroy that creature. You gain life equal to that creature's toughness."
Meglonoth79%
$0.36↑#223460.2817.7 years↓
"Whenever this creature blocks a creature, this creature deals damage to that creature's controller equal to this creature's power."
Freelance Muscle76%
$0.22↓#17826↑0.194.5 years↓
"Whenever this creature attacks or blocks, it gets +X/+X until end of turn, where X is the greatest power and/or toughness among other creatures you control."
Halfdane73%
$35.97↑#286080.06↓32.4 years↑
"At the beginning of your upkeep, this card's base power and toughness become equal to the power and toughness of target creature other than this card until the end of your next upkeep."
Viashino Weaponsmith72%
$0.17↓#31614↓0.00↓28.0 years↑
"Whenever this creature becomes blocked by a creature, this creature gets +2/+2 until end of turn."
Kalitas, Bloodchief of Ghet72%
$5.79↑#16736↑0.2517.0 years↓
"
, 
: Destroy target creature. If that creature dies this way, create a black Vampire creature token. Its power is equal to that creature's power and its toughness is equal to that creature's toughness."
, : Destroy target creature. If that creature dies this way, create a black Vampire creature token. Its power is equal to that creature's power and its toughness is equal to that creature's toughness."
Raging Gorilla72%
$0.17↓#20470↑0.00↓29.7 years↑
"Whenever this creature blocks or becomes blocked, it gets +2/-2 until end of turn."
Kresh the Bloodbraided72%
$1.44↑#9181↑0.2518.0 years↓
"Whenever another creature dies, you may put X +1/+1 counters on Kresh, where X is that creature's power."
Unruly Krasis71%
$0.38↑#223630.11↓2.7 years↓
"Whenever this creature attacks, you may have the base power and toughness of another target creature you control become X/X until end of turn, where X is this creature's power."
Royal Trooper70%
$0.07↓#310520.2427.3 years↑
"Whenever this creature blocks, it gets +2/+2 until end of turn."
Giant Badger70%
$0.12↓#303210.47↑31.6 years↑
"Whenever this creature blocks, it gets +2/+2 until end of turn."
Shu Defender70%
$1.24↑#31464↓0.00↓27.5 years↑
"Whenever this creature blocks, it gets +0/+2 until end of turn."
Town Sentry70%
$0.28↓#32176↓0.00↓28.3 years↑
"Whenever this creature blocks, it gets +0/+2 until end of turn."
Folk of An-Havva70%
$0.11↓#31542↓0.2731.1 years↑
"Whenever this creature blocks, it gets +2/+0 until end of turn."
Sustainer of the Realm70%
$0.11↓#270360.06↓27.7 years↑
"Whenever this creature blocks, it gets +0/+2 until end of turn."