-
You can manage & track your card collection and decks once you create an account and login.

I have a question about shuffle timing. What is the exact trigger that causes a player to shuffle their scrap pile into their (empty) deck? Does a shuffle occur anytime deck size = 0, or only when an effect (say, your draw step) causes you to draw a card, but you cannot do so without shuffling? If I draw the last card in my deck on my draw step, will my stay empty until I play a battle card that instructs me to draw (or declare an attacker and flip cards in combat)?

You shuffle as soon as your deck is empty.
Source: Wizards of the Coast (2019-04-12)    【Link to Ruling】
Tags: Deck