[MENTION=21938]Dr Simon[/MENTION], is variant human (one with the feat) allowed? In general, how many feats are available in 5e? In 4th, there were plenty, in 3.x only seven (except for fighters)...
I'm leaining toward half-elf (due to low ligh vision

)...
How about:
half-elf, warlock, lucky (or resilient) feat - which explains his survival, sailor background - he's the one who drove the boat to and from the Lichway...Charon like

Amnesiac, no idea who, what, where or when it is.
He is the last living warden of the Lichway - unless he's actually dead warden come back to life
I'll flesh it out over to following days.
Not sure I understand what proficiency in saving throws means...only difference is that I'm applying +2 to those saves...same for skills? So with equal level, I'm as good at athletics as the best of thieves?