- Can I use Unown's "Farewell Letter" Ability to discard it from my bench if there are no cards left in my deck to draw from?
- No, you cannot. The order of operations for Farewell Letter should be to draw a card first, then discard Unown. If you are unable to draw a card, then you cannot discard the Unown.
Source:
TPCi Rules Team (2019-03-28)
Relevant cards
Note: All applicable cards may not be listed below.