Potion of Shared LifeConsumable 8
Source Pathfinder Secrets of Magic
Price 95 gp
Weight light
Activate 
Interact
Two swirling liquids fill this flask, each slightly distinct in color and brightness from the other. When you drink this potion, you consume only half of the contents. If another willing creature consumes the remainder of the contents within 1 minute, your vitalities become linked for 1 minute from the moment the second one of you drinks. The two of you share breath, so as long as you're within 60 feet of one another, neither of you can begin suffocating unless you're both suffocating. You both gain the Share Life reaction.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ConsumableAn item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
NecromancyEffects and magic items with this trait are associated with the necromancy school of magic, typically involving forces of life and death.
PotionA potion is a magical liquid activated when you drink it.