A couple features:
Added music to complement my boss fights.
Music is from the Calamity Mod OST by DM DOKURO.
Used songs: Blood Coagulant (ft. SixteenInMono) and Infernal Catharsis (Rebirth), for the Blood Amalgam and Pit Lord, respectively.
Yes, it's very meta to use music from a mod in a mod.
You can find the original songs on YouTube or SoundCloud; I quite like them personally.
Added Lunatic difficulty level.
To turn it on, use /scoreboard players set difficulty um.dummy 1 (requires op)
To turn it off, use /scoreboard players set difficulty um.dummy 0 (requires op)
Locks game difficulty to Hard, and boosts Undermagic bosses:
Pit Lord gains more armor and damage, attacks much faster, and gains absorption much more often.
Blood Amalgam attacks much faster and summons additional Nodules.
In the future, Lunatic bosses will have special drops, but not yet.
Bosses will generally require more preparation and skill, above that of Hard difficulty.
This is going to be a terrible night... Yep, that's right. It's time for another boss.
Added the Blood Amalgam
Added its summoning item, the Sanguine Eye
Added its drop, Crystallized Blood Essence
Plenty of new content and changes.
Added Carnage, an upgradeable mining tool
Added Bloodstained Armor
Sanguis Inspectorum can now read the blood within Bloodstained Armor
Changed Bloodstone texture
Adding a new miniboss and a new utility mechanic.
Added Ritual of the Bloodletter
Added Bloodstone Elemental miniboss
Added Animal Creation rituals
A QoL change and bug fixes.
Added Sanguis Inspectorum
Fixed an oversight that made Blood Infusions cost no Blood
Undermagic is not dead, contrary to what you probably thought - my hiatus was simply much longer than expected. And as such, I present to you: Beta 6 - the Blood Magic Update!
Added the Blood Crucible
Added Alchemical Pedestals
Added a new crafting process: Blood Infusion
Because every mod needs an Infusion Altar
Added a new melee weapon: the Bloody Edge
Please see the guide document for further details, including the content of the update. Guide Document
You'll probably be happy to know that a new boss is coming soon. But first, QoL machines!
In the future, I'll try to avoid releasing bugged versions!
Fixed a bug
You didn't think I'd make a boss drop with no uses, did you?
Added the Pit Lord's Chestplate
No resource pack update is required.
Another Undermagic update is here, and this one's a big one:
Added the Demon Portal Stabilizer
Added the Pit Lord
Made Greater Demon rare drops more common (sword shards and heartstones)
A couple quick fixes:
Made blueprints actually required to make the Bow of Niflheim
Made blueprints actually spawn in igloo chests