Heart-Shaped Herb 
Artifact
$0.29 #15360 0.22 0.3 years
If a source an opponent controls would deal damage to you, prevent 1 of that damage.
, 
, Sacrifice this artifact: You may sacrifice a creature. If you do, return that card to the battlefield under its owner's control with three +1/+1 counters on it and you become the monarch.Click a line or tag to filter
Cards similar to Heart-Shaped Herb 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↓#20775↓0.00↓28.0 years↑
"If a source would deal damage to you, prevent 1 of that damage."
Energy Field82%
$1.52↑#144040.47↑28.0 years↑
"Prevent all damage that would be dealt to you by sources you don't control."
Orbs of Warding80%
$0.67↑#132930.2511.3 years↑
"If a creature would deal damage to you, prevent 1 of that damage."
Protection of the Hekma76%
$0.25↓#26085↓0.47↑9.5 years↑
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Guardian Seraph75%
$0.61↑#21183↓0.1817.3 years↑
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Festival of the Guildpact72%
$0.20↓#25282↓0.00↓21.0 years↑
"Prevent the next X damage that would be dealt to you this turn."
Personal Sanctuary72%
$0.31↑#23068↓0.2115.3 years↑
"During your turn, prevent all damage that would be dealt to you."
Pentagram of the Ages72%
$0.42↑#28005↓0.1331.4 years↑
", : The next time a source of your choice would deal damage to you this turn, prevent that damage."
, : The next time a source of your choice would deal damage to you this turn, prevent that damage."
Solitary Confinement70%
$0.60↑#4025↑1.00↑24.4 years↑
"Prevent all damage that would be dealt to you."
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."
Haazda Shield Mate70%
$0.34↑#29951↓0.00↓20.5 years↑
"
: The next time a source of your choice would deal damage to you this turn, prevent that damage."
: The next time a source of your choice would deal damage to you this turn, prevent that damage."