Does Ahri Nine-Tailed Fox's legend ability trigger once or multiple times when multiple enemy units attack, and does each attacking unit get -1/-1?

Ruling: Ahri Nine-Tailed Fox's legend ability triggers separately for each attacking enemy unit, giving each one -1/-1. You never make a choice about which unit to target.

Sequence:

• When enemy units are designated as attackers
• Ahri's ability triggers once per attacking unit
• Each trigger goes on the chain separately
• Each attacking unit receives -1/-1 from its corresponding trigger

Nuances:

• This differs from Inquisitive Ahri, which triggers only once "when I attack or defend" and requires choosing a single target unit
• The wording "when an enemy unit is attacking give IT -1/-1" causes the multiple triggers, as it references each individual unit being designated as an attacker