Patch 06/02/2015 (2 Jun 2015): Tier 4: Can now be proc'd up to 5 times every 0.250s. (i.e. each beam of Gamma Rays has the potential to trigger the cooldown reduction) Tier 8: Damage increased to 7% Assault Power, from 6.15%. DoT duration decreased to 3s, from 4s. First tick of damage applies immediately. Fixed a bug that gave Atomize extra Armor Pierce. No longer triggers GCD (Previously 0.5s).
Invasion: Nexus (5 May 2015): T4 redesign: While Atomize is on cooldown, Critical Hits reduce its cooldown by 0.5s. T8 rebalance: DoT effect ticks every 1s for 4s, from every 2s for 6s. Damage reduced to 6.15% Assault Power, from 14.98% Assault Power.