CemTon is a magic Runeword created by combining a Cem Rune of Ritual and a Ton Rune of Invocation.
How to Create CemTon
You can create CemTon by adding the magic Cem Rune of Ritual and the magic Ton Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Cem - Cast Evade. (75)
Ton - Invoke the Sorcerer's ites, dealing damage to enemies. (20)
Meteor
Overflow
When CemTon overflows, you receive the Ton Rune's overflow effect (Increased Meteorites Spawned) 2.75 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.