-Dual Wield:Short swords
-Scythe
-Ribbon Knife
-Voiding
-Projection
-Animation
-Longsword
-Siege Crossbow
Plot and Skill Based
-With (hopefully) Expert and/or Master level Voiding, Sekai can start stashing a large variety of objects, ranging from weapons, to anything that is usable even after being frozen
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-Find someone who can make a small shoulder guard, with a three foot long chain attached.
-Become a trader.
-Stash a ballista in the Void
-Control a Ballista via Animation
-Travel via Animated Wagon
-Animate a squadron of dolls
Plot Based
-Mentally break into the mindset of a weapon, and then re-humanized.