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Theoretically speaking, say I have a character with Focus 6, but only 3 cards are left in my deck. What would happen after I pick up those 3 cards to look at? Would I set aside those 3, reshuffle my discard pile to become my deck, and then look at the top 3 of the new deck in addition to the 3 set aside, or would Focus 6 be reduced to Focus 3?

The first one.
Source: Wizards of the Coast (2019-05-10)    【Link to Ruling】
Tags: Focus