PoE2
Ignite Proliferation
Support
AoE, Fire
Cost Multiplier: 120%
Requires: Level 1
Support Reqirements: +5 Int
Supports any skill that Hits enemies, spreading Ignites it inflicts to nearby enemies.
Ignites caused by Supported Skills spread to other Enemies within 1.4 metres
Place into a Skill's Support Gem socket in the Skills menu to apply its effects to that Skill. You cannot have multiple copies of the same Support Gem socketed at the same time.
PoE1
Ignite Proliferation Support
Fire
Support, AoE
Level: (1–20)
Cost & Reservation Multiplier: 130%
Requires: Level (38–70), (27–48) Str, (40–70) Int
Supports any skill that hits enemies.
Ignites caused by Supported Skills spread to other Enemies within (1.4–2) metres
Supported Skills deal (15–24)% more Damage with Ignite

Additional Effects From Quality:
Supported Skills deal (0–10)% increased Fire Damage
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.