IgniTal is a legendary Runeword created by combining a Igni Rune of Ritual and a Tal Rune of Invocation.
How to Create IgniTal
You can create IgniTal by adding the legendary Igni Rune of Ritual and the magic Tal Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Igni - Stores offering every 0.3 seconds. Cast a non-Basic Skill to gain the stored offering. (Up to 500 Offering). (25)
Tal - Invoke the Spiritborn's Pestilent Swarm, dealing damage to enemies. (30)
Overflow
When IgniTal overflows, you receive the Tal Rune's overflow effect (Increased Swarms Spawned) 0.67 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.