Why does Token Gear require both killing and exhausting to gain a power energy?

Ruling: You kill Token Gear because it's one-time use. You exhaust it because if it comes into play exhausted, the exhaust requirement matters for whether you can use it.

Nuances:

• The card requires both killing AND exhausting as part of its activation cost
• If Token Gear enters play already exhausted, you cannot use its ability since you cannot exhaust an already exhausted card