About access keys

Hi,

I only have a nightfall account with access trial keys for factions and prophesies. My question is, can I stick in the factions key, change my secondary dervish profession to assassin, and stay with it? Similarly, can I make an assassin character on nightfall, and keep it there, even after the trial period (on nightfall)?

Thanks for reading

Nope, once the trial expires, anything (skills/classes) associated with that trial will become locked until you buy the full version.