Outpost:
If this is the first time you played an Outpost this turn, and the previous turn wasn't yours, then take an extra turn after this one, and you only draw 3 cards for your next hand.
The question is: do we stop reading at the part where it says "take an extra turn after this one" and just ignore the and clause which comes after it or not?
It looks like the condition for Outpost to do anything is just "did you take a turn before this?"
If you played a Lich and Outpost, the previous turn wasn't yours, so we keep reading.
Then we get to the interesting part:
then take an extra turn after this one, and you only draw 3 cards for your next hand.The second and part has no other condition, it doesn't say
then take an extra turn after this one, if you do, only draw 3 cards for your next handSo if we follow the rule that we must do as much as we can, we want to take an extra turn, but we can't.
Then we draw 3 cards for our next hand when we get to our Clean-up phase, we can do that.
So we've arrived at the clean-up phase and it gets interesting.
Durations are supposed to be cleaned up when they no longer do anything on the next turn. In this case you could argue that after you've drawn your 3 cards there is nothing left on the card that we need to know for our next turn and it can be immediately discarded. This is contrary to an actual Outpost turn where you need to be reminded that it's an Outpost turn in case you play another Outpost.