
The Common-tier Heal rune, Uncommon rarity: base stat REGEN +15 at 20 CP for 1 energy. One of the four tiers of the Heal rune line for carried items.
Common Heal Rune
Uncommon · REGEN +15

Database · Runes · Heal line
The Common-tier Heal rune, Uncommon rarity: base stat REGEN +15 at 20 CP for 1 energy. One of the four tiers of the Heal rune line for carried items.
Uncommon · Common tier · Heal stat line
Source
Rift System · Holo-Battle Sim
Source
Adventure Rank · Chest

The Common-tier Heal rune, Uncommon rarity: base stat REGEN +15 at 20 CP for 1 energy. One of the four tiers of the Heal rune line for carried items.
Uncommon · REGEN +15
The game's item data lists 2 sources for the Common Heal Rune: Rift System · Holo-Battle Sim, Adventure Rank · Chest. The Holo-Battle Sim rift is the recurring farm for every rune tier.
It grants REGEN +15 as its base stat, weighs 20 CP and costs 1 energy to socket. It is the Common tier of the Heal line, whose four tiers run Common (Uncommon), standard (Rare), Advanced (Epic) and Premium (Legendary).
No published build on this site recommends the Heal line yet; the recommended-build panels on the Aniidex pages will pick it up as soon as one does.