When Red Volibear (Furious) deals 5 damage to a single unit with Deflect, does it trigger Deflect multiple times (like Icathian Rain) or just once?

Ruling: Red Volibear's effect is one instance of 5 damage when targeting a single unit, so Deflect only needs to be paid once. If splitting the 5 damage among multiple units that have Deflect, you pay the Deflect cost for each unit targeted.

Sequence:

• Determine how many units Volibear is targeting
• If targeting one unit: pay Deflect once for the single instance of 5 damage
• If splitting damage among multiple units with Deflect: pay Deflect cost for each unit that has Deflect

Nuances:

• This differs from Icathian Rain, which says "do this 6 times" making it 6 separate instances on the chain, requiring Deflect to be paid 6 times
• The key difference is whether the effect creates multiple instances versus one instance of damage