Heart-Shaped Herb 
Artifact
$0.25 #16801 0.00 0.2 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↓#20570↓0.28↑27.9 years↑
"If a source would deal damage to you, prevent 1 of that damage."
Energy Field82%
$1.88↑#143030.23↑27.9 years↑
"Prevent all damage that would be dealt to you by sources you don't control."
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 Hekma76%
$0.18↓#25865↓0.009.4 years↑
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Guardian Seraph75%
$0.55↑#20983↓0.42↑17.1 years↑
"If a source an opponent controls would deal damage to you, prevent 1 of that damage."
Festival of the Guildpact72%
$0.22↓#25054↓0.54↑20.9 years↑
"Prevent the next X damage that would be dealt to you this turn."
Personal Sanctuary72%
$0.29↑#22903↓0.57↑15.1 years↑
"During your turn, prevent all damage that would be dealt to you."
Pentagram of the Ages72%
$0.43↑#27693↓0.18↑31.3 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%
$0.50↑#4027↑0.82↑24.3 years↑
"Prevent all damage that would be dealt to you."
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."
Haazda Shield Mate70%
$0.32↑#29595↓0.19↑20.3 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."