Thunderstaff 
Artifact
$0.27 #21499 0.00 22.6 years
As long as this artifact is untapped, if a creature would deal combat damage to you, prevent 1 of that damage.
, 
: Attacking creatures get +1/+0 until end of turn.Click a line or tag to filter
Cards similar to Thunderstaff 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.
Urza's Armor82%
$0.24↓#205700.28↑27.9 years↑
"If a source would deal damage to you, prevent 1 of that damage."
Orbs of Warding80%
$0.56↑#13137↑0.0611.1 years↓
"If a creature would deal damage to you, prevent 1 of that damage."
Protection of the Hekma80%
$0.18↓#25865↓0.009.4 years↓
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Guardian Seraph80%
$0.55↑#209830.42↑17.1 years↓
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Sphere of Purity80%
$0.02↓#30561↓0.42↑22.9 years
"If an artifact would deal damage to you, prevent 1 of that damage."
Duergar Mine-Captain78%
$0.25↓#249120.0518.1 years↓
"
, 
: Attacking creatures get +1/+0 until end of turn."
, : Attacking creatures get +1/+0 until end of turn."
Weathered Bodyguards72%
$0.31↑#238540.25↑19.9 years↓
"As long as this creature is untapped, all combat damage that would be dealt to you by unblocked creatures is dealt to this creature instead."
War Horn72%
$0.11↓#219620.0011.1 years↓
"Attacking creatures you control get +1/+0."
Hedron-Field Purists72%
$0.36↑#223270.31↑16.4 years↓
"If a source would deal damage to you or a creature you control, prevent 1 of that damage."
Martyrs of Korlis70%
$5.93↑#31664↓0.45↑32.5 years↑
"As long as this creature is untapped, all damage that would be dealt to you by artifacts is dealt to this creature instead."
Veteran Bodyguard70%
$1.89↑#27863↓0.12↑33.1 years↑
"As long as this creature is untapped, all damage that would be dealt to you by unblocked creatures is dealt to this creature instead."
Sphere of Reason70%
$0.24↓#29770↓0.36↑24.9 years↑
"If a blue source would deal damage to you, prevent 2 of that damage."
Farsight Mask70%
$0.35↑#15372↑0.44↑22.9 years
"Whenever a source an opponent controls deals damage to you, if this artifact is untapped, you may draw a card."
Suppressor Skyguard70%
$11.89↑#9219↑0.19↑2.5 years↓
"Whenever a player attacks you, if that player has another opponent who isn't being attacked, prevent all combat damage that would be dealt to you this combat."