YaxTal is a magic Runeword created by combining a Yax Rune of Ritual and a Tal Rune of Invocation.
How to Create YaxTal
You can create YaxTal by adding the magic Yax Rune of Ritual and the magic Tal Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Yax - Drink a Healing Potion. (200)
Tal - Invoke the Spiritborn's Pestilent Swarm, dealing damage to enemies. (30)
Overflow
When YaxTal overflows, you receive the Tal Rune's overflow effect (Increased Swarms Spawned) 5.67 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.