What was not a conclusion of the Council of Trent Praying to saints and the virgin Mary should be discouraged or salvation comes from a combination of faith and good works?

Praying to saints and the Blessed Virgin was most definitely NOT discouraged at the Council of Trent. Salvation comes exclusively from Our Blessed Lord, Jesus Christ, but to attain this salvation one must needs have works as The Bible plainly states. But no Church Council ever taught that salvation is won by good works, salvation only comes through the good works of Our Blessed Lord on the cross for our salvation - we do not "earn" salvation by working for it, even though without works, we are most probably damned.