“Rolling 1 or 20” for death saves saying natural 1 and 20 or modified roll?

Can you just have an open hand for somatic components?

If a spell doesn’t have words “target” does it need line of sight?

Would a human female have to make the 50% roll for belt of dwarven kind?

Any insight on how a Good mage could join the Arcane Brotherhood?

What defines a not-spell scroll for non-class-caster use purposes?