Ancestral Katana #1
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Raw
$0.29
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Card Details
Whenever a Samurai or Warrior you control attacks alone, you may pay 
. When you do, attach this Equipment to it.
Equipped creature gets +2/+1.
Equip 
Illustrated by Daniel Ljunggren
Rulings (2)
Feb 18, 2022
A creature attacks alone if it's the only creature declared as an attacker during the declare attackers step. For example, Ancestral Katana's triggered ability won't trigger if you attack with multiple creatures and all but one of them are removed from combat.
Feb 18, 2022
If you choose to pay as Ancestral Katana's ability resolves, a second triggered ability triggers and players may respond to it. Then, as that second ability resolves, Ancestral Katana becomes attached to the creature that attacked alone.