Craft it
You need
Make it at (any of these)
Needs a Pal with Handiwork. Best:Solenne (Lv 8), Selyne (Lv 7), Wistella (Lv 6)
Work: 500,000
Slab overflowing with energy of Blazamut Ryu.
Offer to a Summoning Altar
to summon an inconceivably powerful (Lv ??) Blazamut Ryu.