The phrase "is in cards" means that something is likely or probable to happen. The antonyms for this phrase would be "unlikely" or "impossible." If something is unlikely to happen, then it is not in the cards. Alternatively, if something is impossible, it cannot be in the cards. Other antonyms for this phrase could include words like "unexpected," "surprising," or "unforeseeable." These words indicate that something may happen, but it's not predicted or anticipated. In short, the antonyms of "is in cards" indicate that something is not probable, planned, or anticipated, but rather unexpected or impossible.