Leif was probably saved through implicit faith.
Leif was saved through explicit faith since he was a Catholic!
There's no such thing as being "saved through implicit faith".
"Whosoever will be saved, before all things it is necessary that he hold the Catholic faith." - St. Athanasius (Athanasian Creed), repeated by Pope Eugene IV at the Council of Florence
Ladislaus was being sarcastic.
Oh. I see he was banned too.
Well for those interested, Leif Ericson was a Catholic viking and missionary in Greenland. He was converted to the faith and baptized by the great King of Norway Olaf Tryggvason.