ZanTon is a magic Runeword created by combining a Zan Rune of Ritual and a Ton Rune of Invocation.
How to Create ZanTon
You can create ZanTon by adding the magic Zan Rune of Ritual and the magic Ton Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Zan - Cast an Ultimate Skill. (150)
Ton - Invoke the Sorcerer's ites, dealing damage to enemies. (20)
Meteor
Overflow
When ZanTon overflows, you receive the Ton Rune's overflow effect (Increased Meteorites Spawned) 6.5 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.