Curse of avernus

Abaddon strikes an enemy with chilling curse on each attack, causing all units who attack the slowed enemy to gain increased movement speed, along with faster attack speed, for a limited time.

Move Speed Slow: 8%/12%/16%/20%
Attack Speed Slow: 8/12/16/20
Move Speed Bonus: 15%
Attack Speed Bonus: 10/20/30/40
Slow Duration: 2.5
Bonus Duration: 4.5
 Illusions cannot place the debuff on enemies, but they do get the buff when starting an attack.
 Frostmourne Buff: Dispellable with any dispel.
 Frostmourne Debuff: Dispellable with any dispel.

Notes:

• On each successful attack, Abaddon places a debuff on the target which slows them.

• Every allied unit which starts attacking a unit which has the Curse of Avernus debuff on, gets the speed increasing buff.

• This means it does not matter if Abaddon is still attacking the unit. As long as a unit has the debuff on, allies get the speed buff upon attacking it.

• The slowing debuff can be placed onbuildings, but cannot be placed on wards or allied units.

• The speed increasing buff is not applied on buildings, wards or enemies attacking a debuffed unit.

• Abaddon himself always gets the speed increasing buff, regardless of the debuff, except when the attack target is a building.
  • However, after having placed the debuff on a building, Abaddon gets the buff like how allies do upon attacking it.

• Successive attacks on the same target do no stack, but refresh the duration instead. This goes for the buff and debuff.