How Aran's Final Blow command effect works?

winner003

New member
Jan 28, 2021
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Malaysia
Hi guys, can someone explain to me how Aran's Final Blow command effect works? Its says "render enemy attack ineffective", does it mean that it can cancel out enemy's attack? I've been trying out but i still receive damages from bosses. Anyone who is Aran main or anyone who know how does this command effect works, please help me out. Thank you