- You discard this at the beginning of your next turn, like Sloth cards?
- This card is cumulative if multiple copies are in play?
Yes to both.
- When you can trigger this card's effect?
A) When you purchase it from market?
B) When you draw it from deck?
C) When you get it from other player (via other card effects)?
Yes to all 3 situations.
- Can you use the free card from market to build the stack?
Yes. You get the card to your hand before you build the stack.
Order in Chaos
- What exactly this card does? Example. You have 4 cards in hand and going to draw card from exhausted deck. You take whole discard pile in to your hand and discard to 4 cards (selecting those 4 to keep from all cards you had in hand plus the current discard pile)?
Exactly that. You get to pick your hand from your whole card pool. Just make sure you have a decent amount of card when you're going to shuffle your deck.