The damage caused by “Rod of the Mind’s Eye” is Battle Damage, so it can be reduced to zero with “Waboku” or “Kuriboh”.
When you equip “Rod of the Mind’s Eye” to “Susa Soldier” or “Shadowknight Archfiend”, the Battle Damage is 1000 points.
When “Gravekeeper’s Vassal” is equipped with “Rod of the Mind’s Eye”, the effect is not activated because the damage caused by “Gravekeeper’s Vassal” is effect damage.