Runecrafting

is one of the Skills available for players to level up by fusing runes, killing Runic Mobs, or by killing Bosses. It allows the player to fuse Runes onto their weapons and armor. Runecrafting is a cosmetic-only mechanic, and can only be leveled up to level 3 with the rank.

Roman Numerals are used to express its levels in-game.

Mechanics
Runecrafting is one of three "cosmetic" skills, which have content locked to players without a Rank. Players with no ranks cannot increase past level 3 in the skill, and higher ranks apply a higher exp multiplier. As a "cosmetic" skill no important content or any stats require it to be leveled, and other than some small benefits it may provide (such as tabbed chests) it's purely decoration. The other cosmetic skills are Carpentry and Social.

Each rune has an associated level. The runes can be fused- however, they cannot be activated until the player has their Runecrafting level equal to or greater than the level of the rune.

Runic Mobs
Runes are obtained from Runic Mobs. Runic Mobs are normal SkyBlock Mobs, but with 4x higher, and deal double damage. They have a purple name tag, and a much lower chance to spawn. When killed, they are guaranteed to drop a Rune.

All mobs can be Runic except Ender Dragon, Magma Cube Boss, Slayer Boss/Miniboss, Dungeon Boss or Dungeon Boss Minion.

Certain runes are also obtained from Slayer or as special rewards.

Fusing Runes
Runes can be fused on the Runic Pedestal, found behind the Blacksmith and owned by the NPC Dusk.

Fusing two runes together will have a chance of upgrading the rune to the next level, up to the maximum level of 3. Upon success or failure, the second rune is consumed. If this process does not succeed, the remaining rune will not gain the level. The chance of success can be seen in the Runic Pedestal while hovering over the apply trigger. Regardless of the outcome, this will also grant Runecrafting experience. More experience is awarded upon success.

Runes can be fused onto Swords, Bows, Chestplates, and Boots, depending on the type of rune. The player must have their Runecrafting level either equal to or greater than the level of the rune, or they won't be able to fuse it. This only applies to fuse runes to items; runes above the player's Runecrafting level can still be combined together. Fusing runes onto items will also grant Runecrafting experience.

Slayer Runes
The drop rate of the 3 runes above with "Pray RNGesus" is approximately 0.32%(1/309).

Rates
Different rune rarities grant differing amounts of experience and have different success rates when fusing. F(n), the probability of successfully fusing on the nth attempt is represented as a function of P(n), the probability of merging on a given attempt. This distribution is binomial in nature.

$$ F(n) = P(n) * (1 - P(n))^{n-1}$$

C(n) the cost in runes on the nth attempt is

$$C(n) = 1 + n$$

Therefore, we can represent E(n), the expected number of runes during fusing as E(n) = ∑ F(n) * C(n)

$$E(n) = \sum P(n) * (1-P(n))^{n-1} * (1+n)$$ In order to calculate the expected runes to acquire

$$T_3$$ , we can represent the cost C(n) in terms of the cost of T2, or

$$C_3(n) = E(n) + E(n)*n$$

Therefore, the cost of T3 rune is

$$E_3(n) = \sum P(n) * (1-P(n))^{n-1} * (1+n) + n * \sum P(n) * (1-P(n))^{n-1} * (1+n)$$ $$= E(n) ^ 2$$ Alternatively, where

$$L$$ is the level of the rune desired:

$$ E_L(n) = (P(n)^{-1} + 1)^{L - 1} $$

Runecrafting EXP Multipliers
If you have different ranks on Hypixel, you will get more XP.


 * Normal: x1.0, Max level 3
 * x1.1
 * x1.25
 * x1.5
 * x2
 * x3

Bugs

 * Sometimes, stops working on boots with a rune. The only workaround is to throw the boots onto the ground and pick it up.

Trivia

 * This skill was supposed to be released July 16, 2019, but was delayed to August 2, 2019, due to the need for more testing.
 * The Headless Horseman Boss can be Runic, giving it . With a base health of, it should have.
 * The glitched runes appeared from the original hour of the Runecrafting release date, they are most likely made unusable since every enemy dropped a blood rune.
 * The Tidal Rune is the only Rune that is in bold font.
 * The Jerry Rune is the only Rune that is only available in the 3rd tier.
 * The Enchant Rune is the first and only Rune that can be applied to Chestplates.
 * Similarly, Fiery Burst rune is currently the only rune that can be applied to Hoes.
 * Tarantula Broodfather is the only slayer that doesn't drop RNG rune

History
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