I think you are trying to be offensive but are also confusing 2 different things.
1) All Muslims pray in the direction of Mecca, the Kaaba to be specific.
2) Shias are known to perform prostration on mud tablets that are normally sourced from Karbala, Iraq. However it is important to note that Shias are only required to pray on something natural that isn't edible. Shias generally choose to pray on tablets from Karbala as a tribute to the grandson of the Prophet, who was martyred in that land.
3) We do not pray to the tablet or the Kaaba however, the prayer is dedicated to God only.
@timmosion Please pay no heed to such posts.
We do not rejoice in the suffering of any people.
"Men are of two types, your brother in faith or your equal in humanity"
-Ali ibn Abi Talib