Rock Hydra 


Creature — Hydra
This creature enters with X +1/+1 counters on it.
For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.
{R}: Prevent the next 1 damage that would be dealt to this creature this turn.
{R}{R}{R}: Put a +1/+1 counter on this creature. Activate only during your upkeep.
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.
Balduvian Hydra 100%
#28989
"{R}{R}{R}: Put a +1/+0 counter on this creature. Activate only during your upkeep."
+2 more matching lines
Mountain Titan 83%
$0.59#31344
"{1}{R}{R}: Until end of turn, whenever you cast a black spell, put a +1/+1 counter on this creature."
Ugin's Conjurant 83%
$0.14#11378
"If damage would be dealt to this creature while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from this creature."
+1 more matching line
Oathsworn Knight 82%
$0.31#18953
"If damage would be dealt to this creature while it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from it."
+1 more matching line
Undergrowth Champion 81%
$0.58#8082
"If damage would be dealt to this creature while it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from this creature."