When Heimerdinger copies a Gold Gear Token's exhaust ability, does he kill himself from the 'Kill this' cost, or does he only copy the 'add power resource' effect?

Ruling: Heimerdinger kills himself when copying the Gold Gear Token's exhaust ability because he copies the costs of exhaust abilities as well as their effects.

Sequence:

• Heimerdinger's ability triggers on the exhaust ability
• He copies both the cost (Kill this) and the effect (add power resource)
• Heimerdinger is killed as part of paying the copied cost
• The power resource effect resolves