If Counter Strike is played on First Mate during combat, does it prevent damage from all attacking units or just one of them?

Ruling: Counter Strike prevents all combat damage dealt to First Mate in a single combat, regardless of how many units are attacking. Since all combat damage is assigned and dealt simultaneously as one instance, Counter Strike will prevent the total combined damage from all attackers.

Sequence:

• All attacking units assign their damage to First Mate
• All damage is dealt simultaneously as one instance
• Counter Strike prevents that entire instance of damage

Nuances:

• Combat damage is dealt simultaneously, not separately per attacker, so it counts as a single instance of damage even when coming from multiple sources