This is a Jemison , which I wanted to try a little bit. It is based on a deck played by someone else, I just added the Excalibur.
Are the forfeit effects of Divested Trust and Tithonium mutually exclusive or can you do both at the same time?
you can not forfeit an agenda for different things at the same time.
If you have a Divested Trust scored and want to rez a Tithonium for free, you can do so at the moment you could normally rez the ice - i.e. when the runner encounters the tithonium unrezzed (forfeiting the Divested Trust ).
The ability on Divested Trust is usable exactly when the runner just stole an agenda (and did not win off of that). In this case the corp player may choose to forefeit the Divested Trust to gain 5 credits and put the agenda just stolen into hq from the runners score area, triggering Jemison Astronautics: Sacrifice. Audacity. Success.'s ability in the process for 2 advancement counters on an installed card.
I think with the current cards it would in fact be impossible to even engineer a situation in which you would be even given the choice to do one or the other
Are you sure you want to delete this decklist?