A double-faced permanent that transforms is still the same permanent, so any Auras, Equipment, and counters will stay on it
A Saga creature, premiering here in Magic: The Gathering FINAL FANTASY, is also a creature and can do everything a creature can do
So for those of you/us that love the political game that intangible ability to convince your opponents you're not the threat, or make them protect you and would like to deck build around this key aspect of multiplayer, I've got some commanders you may want to consider
Perhaps you pair it with Erinis, Gloom Stalker to ramp lands, or Amber Gristle OMaul if you want to swing with haste and turn your commander into another creature during combat
This can be done in conjunction with cards like Angels Grace or even the new Doctor Who card Everybody Lives
He takes some pleasure in the sufferings of the living but far prefers the company and service of the undead