KillEffect

For the plugin to work, a resource pack is required, which can be obtained via a link—simply add it to your server settings. KillEffect is a unique plugin offering a choice of six effects: Strength, Speed, Hero Of The Village, Haste, Regeneration, and Jump Boost.

Each time you kill another player, you gain a positive level of the chosen effect. The maximum positive level is two. Conversely, when you die, you receive a negative effect with a maximum level also of two.

Below are the effects and their opposites:

• Strength: Strength in the positive version, Weakness in the negative.
• Speed: Speed in the positive version, Slowness in the negative.
• Hero Of The Village: Hero Of The Village in the positive version, Glowing in the negative.
• Haste: Haste along with increased attack speed in the positive version, Mining Fatigue in the negative.
• Regeneration: Regeneration in the positive version, Poison in the negative.
• Jump Boost: Jump Boost in the positive version, Nausea in the negative.

There are also additional features: if you die to something other than a player, a potion of the effect level drops. YouTube videos showcase these features.