Ice Token

Ice Tokens are a common item seen in SITASN. Tack is known for having them.

Non-challenge
Ice Tokens are practically an XQZ'd pass, as they let you get a 50% score without you having to do anything (unlike Clone Tokens, where they give you a random %.)

In challenge
Ice Tokens can freeze opponents during challenges. This is useful in races, etc.

Appearance
Ice Tokens seem to be colored like Revenge Tokens, but in a much lighter shade.

Trivia

 * Ice Token has the same initials as an Immunity Token.