NOPE.
You’ve been misinformed.
Even valid such are only for healing.
Nothing to do with Salvation.
I see, so it's exactly like the Catholic teaching that you can ask Mary and Saints to pray for you. God is, after all, the God of the living not the God of the dead, so those who have shed this mortal coil are alive elsewhere and you can pretend to be pentacoastal and ask them to pray for you. Or, can you only ask them for healing?