Shieldmate's Blessing 
Instant
Prevent the next 3 damage that would be dealt to any target this turn.
click a line to search just that ability, click more to combine them
Cards that do something similar 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.
Candles' Glow 99%
$0.22#26349
"Prevent the next 3 damage that would be dealt to any target this turn. You gain life equal to the damage prevented this way."
Swift Maneuver 97%
$0.09#29242
"Prevent the next 2 damage that would be dealt to any target this turn."
Orim's Touch 93%
$0.05#31267
"Prevent the next 2 damage that would be dealt to any target this turn. If this spell was kicked, prevent the next 4 damage that would be dealt to that permanent or player this turn instead."
Hold at Bay 85%
$0.08#26465
"Prevent the next 7 damage that would be dealt to any target this turn."
Healing Grace 84%
$0.16#22634
"Prevent the next 3 damage that would be dealt to any target this turn by a source of your choice. You gain 3 life."
Sunfire Balm 82%
$0.05#30741
"Prevent the next 4 damage that would be dealt to any target this turn."
Orim's Cure 82%
$0.14#29485
"Prevent the next 4 damage that would be dealt to any target this turn."
Mending Hands 82%
$0.18#29246
"Prevent the next 4 damage that would be dealt to any target this turn."