Warcry: When this attacks, the top unit or weapon in your deck gets +1/+1.
Warcry X: When this attacks, the top unit or weapon in your deck gets +X/+X.
Even if an attacker with Warcry does not deal damage, as long as it was set to attack, it will trigger.
A deck with Warcry loves attacking as it causes the ability to trigger.
Cards with Warcry
|Sword of Icaria||Uncommon||Avatar Weapon|