When playing a token that has been given Accelerate (such as from Rek'Sai - Sand Devourer), what color power should be used to pay the Accelerate cost?

Ruling: Tokens can be accelerated when played. Since tokens have no domain (or more than one domain), the power portion of the Accelerate cost can be paid with any power.

Sequence:

• When an effect tells you to play a token, you follow all applicable steps for playing a card
• If the token has Accelerate (such as from Rek'Sai - Sand Devourer), you may pay the additional Accelerate cost
• The power cost can be paid with any color power since tokens are domainless

Nuances:

• Tokens are played but are not cards, so they don't trigger abilities like Legion that specifically require playing a card
• Each token must have its Accelerate cost paid separately to enter ready; they don't automatically enter ready just from having Accelerate
• The Chinese FAQ confirms Sand Soldier tokens gain Accelerate with a cost of [1][A] (1 generic and any power)