Maelstrom

 is a Tier 1 skill on Athena's Ceraunic Storm skill tree, and one of two skills mandatory for continuing further down the skill tree.

Effect

 * Elemental Damage: +0.4% per stack.

Shock and Incendiary damage you inflict (including damage-over-time ticks) give you stacks of the 'Maelstrom' buff, increasing Elemental damage. Stacks steadily decay and as the number of stacks increases, the faster this rate of decay will tick down.

Strategy

 * Elemental attacks inflicted by the Aspis (i.e. Prismatic Aegis, Zeus' Rage, etc.) count towards your Maelstrom stacks.