u/Prowiambic

If dragons breath is used on an upgraded potion, then it will further increase it's upgrade. In order to use this, though, you must use a nether star as the fuel (which only has 5 uses, instead of 20). Star fuel has a separate fuel bar, which is only consumed when dragon breath is used to UPGRADE a potion (not when used to make a lingering potion).

An example would be:

Strength II potion + dragons breath = Strength III, but with 1/6th of the duration (15 seconds), since these potions would be extremely strong.

8:00 Strength I potion + dragons breath = 12:00 Strength I

If it is used on a normal potion (3:00 Strength I for example), then it will become a lingering potion like normal. Lingering potions can be upgraded after conversion, unlike other potion types.

Potions can be downgraded by putting a water bottle as the ingredient (like watering it down). This CANNOT be used to turn a potion back into awkward. Potions with a potency of 3 or duration of 12:00 (in other words, those upgraded by dragons breath), cannot be converted into another potion type (meaning they cannot become splash or lingering)

"Well, wouldn't regen 3 completely invalidate golden and enchanted apples?" You may be asking. They both have absorption and regeneration at the same time, which make them inherently better, and are why regen potions are never ever used. And enchanted apples also have resistance/fire resistance. And potions can't stack either so there's that. And they're much harder to obtain.

The new star fuel also introduces new potions that could not be obtained before:

-Haste (Diamond as ingedient)

Lasts 6 minutes. Decreased to 4 minutes when upgraded with glowstone. Increased to 8 minutes when upgraded with redstone.

-Saturation (Golden apple as ingredient)

Lasts 1 second. Increased to 3 when upgraded with redstone. Cannot be upgraded with glowstone.

-Resistance (not effected by glowstone)

Lasts 7 seconds. Increased to 14 when upgraded with redstone. Cannot be upgraded with glowstone.

Upgrading these potions also consumes (and requires) 1 use of star fuel.

I tried my hardest to balanced these to the point where it's better to get a beacon than make these potions, so then they can be used as last resorts instead of farmed and used all of the time (like totems).

It's been 6 whole years since we last got an armor tier (netherite). Well, let's change that.

Prismarine armor is an alternative upgrade to diamond armor that requires searching the seas.

What makes it different from netherite, you may be asking. Instead of providing defense and durability bonuses (it will have the same durability as netherite), it provides a new stat called armor plating. This stat decreases damage dealt to you by a flat amount. Each piece of prismarine armor provides an amount of armor plating, up to 2 armor plating, which reduced damage by 1 for each full point of armor plating (which is 2 with a full set, reducing damage by 2, or 1 heart, before the damage reduction calculation). Balance this as you will in the comments.

Armor plating stats:

Helmet - 0.3

Chestplate - 0.7

Leggings - 0.6

Boots - 0.4

Prismarine tools on the other hand, are purely visual counterparts to netherite tools, but having 20% less durability than netherite tools (otherwise netherite would be completely useless). Prismarine swords, spears, and axes, also do not have the damage bonus that they get from netherite. These tools are meant to be an alternative if you are unable to obtain netherite because of skill or priorities (such as building).

Obtainment

To make prismarine gear, you must obtain an item similar to the oh-so dreaded netherite template, a prismarine template. This Template is obtained in an ocean monument, which has a 10% chance to spawn in ocean monument chests (not in the game, but need to be added. Other loot in chests include prismarine shards, prismarine crystals, fish, and items that are considered "treasure" when fishing. An addition chest will replace one of the gold blocks in the center of the structure, guranteed to contain 1 gold block and at least 1 prismarine upgrade template. Elder guardians also have a 20% chance of dropping one when killed (60% per monument). It can be duplicated using the standard template duplication recipe, with the material being a prismarine block.

You also need to obtain prismite (not the terraria fish guys) by combining one nautilus shell (center), a heart of the sea (bottom center) and iron ingots (rest of the table), which will give you 2 prismite. Combine this and the prismarine template with diamond armor at a smithing table to obtain the very new prismarine gear.

Also, prismarine shards (cyan) can be used as a material when using armor trims. Prismarine crystals can also be used AFTER adding a trim to make the trim glow.