Seven players, round two, and you speak second. Nobody has said "Dapp!".
Your hand
What do you say?
Answer
Pass. Each step down the ladder needs one more Tarok: the XVIII needs four others, and you hold three. Two Taroks from the XV up do not make a trump stop, so the duty does not bind you, and without a trump stop, pass.
Rule: A trump stop is the Skus by itself, the XXI with at least one other Tarok, the XX with at least two other Taroks, or the XIX with at least three other Taroks. The ladder of trump stops goes on in the same way, with one more Tarok for each step down.