How does Void Gate interact with Volibear Furious's damage splitting ability?

Ruling: Void Gate increases the total pool of damage that Volibear splits among units. Instead of splitting 5 damage, Volibear splits 6 damage among the targets.

Nuances:

• Volibear is currently the only effect that splits damage, which is why it receives specific treatment in the rules
• The damage increase applies to the total pool before splitting, not to each instance or target