A new shiny toy for Big Money Rogue. Preston especially, who is very vulnerable to the encounter deck due to low stats, can make good use of this. I think you want to always pay 4 for the "your deck" change, since not having to deal with an encounter card entirely AND getting a free draw is definitely a huge step up from the regular effect. I don't think you usually use this on your fellow investigators unless something REALLY backbreaking to them gets pulled.

Q: When paying 6 to get both effects, does the other investigator get to draw from your deck or their own? The wording makes it sound like they'd get to draw from your deck. I wonder if with friends in low places or other affects which let you search the top of your deck, you could pass cards with this.

A rare card to have for Rogue! Easy upgrade from Guts to make your deck more Rogue-like. I find I use the commit icons just as often as playing it, a flexible option to help other players beat the treachery other than the 4 cost if you happened to be at the same location. (Beat it entirely instead of drawing a new one.)