Thunderstaff 
Artifact
$0.26 #21761 0.24 22.7 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↓#207750.00↓28.0 years↑
"If a source would deal damage to you, prevent 1 of that damage."
Orbs of Warding80%
$0.67↑#13293↑0.2511.3 years↓
"If a creature would deal damage to you, prevent 1 of that damage."
Protection of the Hekma80%
$0.25↓#260850.47↑9.5 years↓
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Guardian Seraph80%
$0.61↑#211830.1817.3 years↓
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Sphere of Purity80%
$0.02↓#30817↓0.05↓23.0 years
"If an artifact would deal damage to you, prevent 1 of that damage."
Duergar Mine-Captain78%
$0.18↓#253590.00↓18.2 years↓
"
, 
: Attacking creatures get +1/+0 until end of turn."
, : Attacking creatures get +1/+0 until end of turn."
Weathered Bodyguards72%
$0.34↑#242510.06↓20.0 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%
$0.07↓#222560.2111.3 years↓
"Attacking creatures you control get +1/+0."
Contested War Zone71%
$0.33↑#14714↑0.07↓15.7 years↓
", : Attacking creatures get +1/+0 until end of turn."
, : Attacking creatures get +1/+0 until end of turn."
Martyrs of Korlis70%
$5.94↑#31928↓0.2432.6 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%
$2.06↑#28103↓0.00↓33.2 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."
Farsight Mask70%
$0.34↑#15535↑0.11↓23.0 years
"Whenever a source an opponent controls deals damage to you, if this artifact is untapped, you may draw a card."
Hedron-Field Purists70%
$0.36↑#226760.00↓16.5 years↓
"If a source would deal damage to you or a creature you control, prevent 1 of that damage."
Suppressor Skyguard70%
$11.33↑#9422↑0.252.7 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."