I am playing the Akashic Records of Tensura modpack, and I am trying to set up a farm for the item “Space Shards (Creative)”. I am using a lot of projectile damage modifiers from Apotheosis gems, the Sundering potion, and Obsidian Arrows, along with the Pride Charm from your mod and a Power 11 bow.

In the end, I was able to deal over 17K damage in an attempt to obtain the item, but it didn’t drop.
For testing damage, I used the Tensura: No Game No Life dummy.

I was able to obtain the item by summoning an arrow with an extremely high damage attribute via a command block, but not through any other method. Is there an intended way to obtain it?

All of my attempts were done in Creative mode, so I don’t think the “(Creative)” in the item’s name refers to the game mode in which it is obtained.

The damage refers to the original damage dealt by the arrow, not counting potion effects on target

The damage refers to the original damage dealt by the arrow, not counting potion effects on target

I made a new world, reproduced all buffs without any effects, still no shard.

Could be mods adding damage after my check. Anyway the expected way to get it is to use a vector cannon

Could be mods adding damage after my check. Anyway the expected way to get it is to use a vector cannon

By vector cannon you mean tnt cannon that launches arrow at high velocity so it deals a lot of damage? Same as an railgun?
Is there your test world download anywhere? Or working design?
I tested Rail Cannon by Fallen_Breath dealt a little over 1000 damage (that was for ender dragon)
And cubicmetre's railgun that he builded for Sipover's Redstone Competition (for wither) that dealt 674 damage

I was able to get the shard by using cubicmetre's railgun with my apotheosis's obsidian arrow buffed with apotheosis tensura's Spider war bow, with power 11.