
The standard-tier Biting rune, Rare rarity: base stat ATK +16 at 30 CP for 2 energy. One of the four tiers of the Biting rune line for carried items.
Biting Rune
Rare · ATK +16

Database · Runes · Biting line
The standard-tier Biting rune, Rare rarity: base stat ATK +16 at 30 CP for 2 energy. One of the four tiers of the Biting rune line for carried items.
Rare · Standard tier · Biting stat line
Source
Rift System · Holo-Battle Sim
Source
Rune Crafting
Source
Adventure Rank · Chest

The standard-tier Biting rune, Rare rarity: base stat ATK +16 at 30 CP for 2 energy. One of the four tiers of the Biting rune line for carried items.
Rare · ATK +16
The game's item data lists 3 sources for the Biting Rune: Rift System · Holo-Battle Sim, Rune Crafting, Adventure Rank · Chest. The Holo-Battle Sim rift is the recurring farm for every rune tier.
It grants ATK +16 as its base stat, weighs 30 CP and costs 2 energy to socket. It is the standard tier of the Biting line, whose four tiers run Common (Uncommon), standard (Rare), Advanced (Epic) and Premium (Legendary).
No published build on this site recommends the Biting line yet; the recommended-build panels on the Aniidex pages will pick it up as soon as one does.