Invasion of New Capenna // Holy Frazzle-Cannon
Battle — Siege // Artifact — Equipment
(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, you may sacrifice an artifact or creature. When you do, exile target artifact or creature an opponent controls.
Whenever equipped creature attacks, put a +1/+1 counter on that creature and each other creature you control that shares a creature type with it.
Equip {1}
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Cards that do something similar expected a card that isn't here?
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Andúril, Narsil Reforged 85%
$16.59#2688
"Whenever equipped creature attacks, put a +1/+1 counter on each creature you control. If you have the city's blessing, put two +1/+1 counters on each creature you control instead."
Sigil of Valor 85%
$0.18#8438
"Whenever equipped creature attacks alone, it gets +1/+1 until end of turn for each other creature you control."
+1 more matching line
Rubblebelt Raiders 84%
$0.13#17880
"Whenever this creature attacks, put a +1/+1 counter on it for each attacking creature you control."
Fangren Firstborn 81%
$2.46#15366
"Whenever this creature attacks, put a +1/+1 counter on each attacking creature."
Bounding Felidar 81%
$0.18#10971
"Whenever this creature attacks while saddled, put a +1/+1 counter on each other creature you control. You gain 1 life for each of those creatures."
Titans' Vanguard 80%
$0.16#8020
"When you cast this spell and whenever this creature attacks, put a +1/+1 counter on each colorless creature you control."