FeoTal is a rare Runeword created by combining a Feo Rune of Ritual and a Tal Rune of Invocation.
How to Create FeoTal
You can create FeoTal by adding the rare Feo Rune of Ritual and the magic Tal Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Feo - Become Injured or Crowd Controlled. (Cooldown: 20 seconds) (1000)
Tal - Evoke the Spiritborn's Pestilent Swarm, dealing damage to enemies. (100)
Overflow
When FeoTal overflows, you receive the Tal Rune's overflow effect (Increased Swarms Spawned) 9 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.