What are you looking to pay? Typically: 100 pc for the harvest phantump and 75 adamant honedge. I suggest going with a brave (+atk/-spe) honedge (typically 100 pc), with 0 speed IV. The lower the speed, the more often you will tank an attack in Shield Forme. On top of that, and Brave still raises attack, but unlike adamant it doesn't lower Sp. Attack. This allows you to run a special move in case of a physical wall, etc. That being said, I will gladly breed an adamant natured one for you if you would prefer that.