Talk:"O Holy Night"/@comment-175.141.116.97-20131218115242/@comment-16083497-20131218124719

always calculate beforehand to ensure the amount of HP you have can theoretically guarantee you at least 6 gems (in lower no. of sets ofc). Example: if your latest chap is 12 then its 18 HP*6 =108 HP for one set. Investigate only when you have 108HP and above.