Divine Bastard Sword is crafted with Hillwen Engineering in Mabinogi. This page lists everything needed to make it, checked against the game as it exists today. The interactive planner lives in the Hillwen Companion.
Recipe availability
Divine Bastard Sword is a rank 9 Hillwen Engineering recipe with a best success rate of 85% at rank 1 and dan ranks.
Materials
Each craft uses
2× Enhanced Hillwen Alloy
10× Shining Metal Shard — Open an Advanced Baltane Supply Box or gather from Purify Avalon's Shore.
5× Medal of Honor — Complete Dai's Special Unit Mission called Medal of Honor.
1× Broken Guardian's Bastard Sword — Complete Baltane Missions or fragment a Silver Echostone to obtain it.