Put a Serpent token into your EX area.
While this card is on your field, each Venomfang Medusa and Stheno on your field has Aura.
QIf a Serpent fights an enemy follower and deals 0 damage, does Bane still destroy the enemy follower?
AYes. Bane triggers whenever a follower with Bane fights an enemy follower, regardless of whether or not damage was dealt.