Great question!! Running out of cards in your deck while playing is not an immediate loss. If you run out of cards you will continue to play the game with the cards in your hand. Once you cannot play a creature to the field or if your cemetery goes above the 300 hp mark you lose the game. Some players play with less than 300 hp in their total deck. This will often lead to the situation where you use all the cards in your deck. In this situation if you have no playable creatures to summon to the field you lose the game. Please let me know if this clears it up or if you have any other questions.
Great question!! Running out of cards in your deck while playing is not an immediate loss. If you run out of cards you will continue to play the game with the cards in your hand. Once you cannot play a creature to the field or if your cemetery goes above the 300 hp mark you lose the game. Some players play with less than 300 hp in their total deck. This will often lead to the situation where you use all the cards in your deck. In this situation if you have no playable creatures to summon to the field you lose the game. Please let me know if this clears it up or if you have any other questions.
-Tom
Ward Staff Member