Stormbeacon Blade {1}{W}
Artifact — Equipment
Equipped creature gets +3/+0.
Whenever equipped creature attacks, draw a card if you control three or more attacking creatures.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)
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Cards that do something similar expected a card that isn't here?
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Cloud, Ex-SOLDIER 87%
$1.40#4739
"Whenever this card attacks, draw a card for each equipped attacking creature you control. Then if this card has power 7 or greater, create two Treasure tokens."