Spined Sliver {R}{G}
Creature — Sliver
Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.
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Cards that do something similar expected a card that isn't here?
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Elvish Berserker 83%
$0.11#23232
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn for each creature blocking it."
Sparring Golem 83%
$0.17#30160
"Whenever this creature becomes blocked, it gets +1/+1 until end of turn for each creature blocking it."