For more information on double-faced cards, see the Ixalan mechanics article (http://magic.wizards.com/en/articles/archive/feature/ixalan-mechanics).
If your life total is 6 or greater as your upkeep begins, the second ability of Arguelâ€™s Blood Fast wonâ€™t trigger. You canâ€™t take any actions during your turn before your upkeep begins.
If your life total is 6 or greater as the second ability of Arguelâ€™s Blood Fast tries to resolve, it wonâ€™t do anything.
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