Finally, Spell Echo Support allows you to cast multiple instances of the spell rapidly. Elemental Focus Support and Controlled Destruction Support both increase the elemental damage of the skill, while Fire Penetration Support grants the skill the ability to punch through monsters with Fire resistance more easily.

By adding these support gems, we are reducing the area of effect of the skill but increasing its damage using Concentrated Effect Support. Here is an example 6-Link a player might use in the end-game of Path of Exile: FirestormĪs you should be able to piece together from reading the tooltips, Firestorm is the skill gem in this link. The result is that your main skill will become exponentially more powerful than if was not linked to support gems. In such an instance, you will always have a single skill gem supported by 5 support gems. In the end game, your goal will be to have a chest or 2-handed weapon with 6 linked sockets.

Path of Exile builds typically revolve around one or two main skill gems (Abilities), augmented by multiple support gems in a link.

Diablo 3 gem levels