The new Greased Lightning feature was added on 1/4 PST (1/5 UTC)!
New Feature: Greased Lightning
Some Soul Breaks and abilities can give your heroes the Greased Lightning effect.
Greased Lightning works as follows:
-Greased Lightning raises the hero’s Attack, and reduces the delay for abilities and Soul Breaks.
-Greased Lightning can be applied up to three times, raising Attack and reducing delay by a larger amount each time.
-Greased Lightning will fade if the hero is hit by an attack.
*Damage over time from Poison or Sap will not break the Greased Lightning effect.
*Damage avoided or negated by Negate Damage or Mirror Image will not break the Greased Lightning effect.
*When Greased Lightning fades, all applications are lost.