Assembled Alphas 

Creature — Wolf
Whenever this creature blocks or becomes blocked by a creature, this creature deals 3 damage to that creature and 3 damage to that creature's controller.
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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.
Sawtooth Ogre 89%
$0.07#31405
"Whenever this creature blocks or becomes blocked by a creature, this creature deals 1 damage to that creature at end of combat."
Inferno Elemental 87%
$0.07#28779
"Whenever this creature blocks or becomes blocked by a creature, this creature deals 3 damage to that creature."
Kessig Forgemaster // Flameheart Werewolf 87%
$0.25#19415
"Whenever this creature blocks or becomes blocked by a creature, this creature deals 2 damage to that creature."
Ashmouth Hound 86%
$0.10#22306
"Whenever this creature blocks or becomes blocked by a creature, this creature deals 1 damage to that creature."
Ornery Goblin 86%
$0.15#21715
"Whenever this creature blocks or becomes blocked by a creature, this creature deals 1 damage to that creature."
Skewer Slinger 86%
$0.15#19306
"Whenever this creature blocks or becomes blocked by a creature, this creature deals 1 damage to that creature."
Shape Stealer 85%
$0.33#25270
"Whenever this creature blocks or becomes blocked by a creature, change this creature's base power and toughness to that creature's power and toughness until end of turn."
Dream Fighter 85%
$0.09#27139
"Whenever this creature blocks or becomes blocked by a creature, this creature and that creature phase out."
Lim-Dûl's Cohort 82%
#31170
"Whenever this creature blocks or becomes blocked by a creature, that creature can't be regenerated this turn."