Phase-shifting weapon

After Anubis developed shields capable of resisting the Tollan Ion cannons, the Curia was forced to make a deal with Anubis' minion Tanith, and agreed to produce advanced weapons for the Goa'uld in exchange for Tollana's survival.

These phase-shifting weapons of mass destruction could obliterate huge areas of a planet's surface, and were equipped with a phase-shifting device. This device enabled the weapon to penetrate solid matter, including Earth's iris. The phase-shifting device was housed in a trinium casing.

It was Anubis' intention to force the Tollan to use the weapon to attack Earth, a planet protected by the Asgard according to the Protected Planets Treaty. However, Narim was able to destroy the weapons construction facility using an Ion cannon with the assistance of SG-1. Tanith eventually attacked the planet. See in "Between Two Fires".