Intercessory prayer

What do Protestants have against the intercession of saints? If, during their lives on earth, the saints interceded with God for their fellow men, after they’ve gone to heaven would they be wrapped in holy indifference? Or would their intercession continue?

How does the calming prayer help us manage volcanic emotions?

“I live in a high and holy place, but also with the one who is contrite and lowly in spirit, to revive the spirit of the lowly and to revive the heart of the contrite" (Isaiah 57:15).