Picture this situation.
I tinker into Jar, activate, drop 3 cards, draw 7.
I Time Twist into Jar again, play it and activate it. I have .. say 3 cards left in hand and drop them as well before drawing 7 again.
What happens at end of turn though?
Do I pick up 6 or just the last 3 I set down?
Memory jar has an activated ability (At end of turn discard your hand and put the cards originally removed from the game back into your hand).
Since 2 jars were activated there will be 2 triggers on the stack. You choose the order in which they go on the stack.
Lets say you place in them on in reverse order of use, so the stack looks like this:
{discard hand and return RFG hand B to your hand}
{discard hand and return RFG hand A to your hand}
The first trigger resolves, you discard your hand and return pile B.
The second trigger resolves, you discard your hand and return pile A.
You'll end up with only 1 pile back in hand, but you get to choose which one. Note that since they are removed face down, you do not get to look at the cards before placing the triggers on the stack. You must go by memory.
