When Path of Mettle enters the battlefield, it deals 1 damage to each creature that doesn't have first strike, double strike, vigilance, or haste.
Whenever you attack with at least two creatures that have first strike, double strike, vigilance, and/or haste, transform Path of Mettle.
Victor Adame Minguez
Path of Mettleâ€™s first ability deals 1 damage to each creature that doesnâ€™t have any of the four listed abilities. It doesnâ€™t deal 1 damage to each creature for each ability that creature doesnâ€™t have.
For Path of Mettleâ€™s last ability to trigger, any two attacking creatures you control need to each have any one of the four listed abilities. They donâ€™t need to share one of those abilities. For example, attacking with Sun Sentinel (a creature with vigilance) and Fanatical Firebrand (a creature with haste) will cause Path of Mettleâ€™s ability to trigger, as will attacking with two Sun Sentinels.
For more information on double-faced cards, see the Ixalan mechanics article (http://magic.wizards.com/en/articles/archive/feature/ixalan-mechanics).
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