Genesis Loop

The Genesis Loop is a unique Boss item that has a chance to be dropped by the when it spawns as the Teleporter boss. If the holder falls below 25% of their max health, they create a large explosion that inflicts incredible damage on any enemies in the vicinity, similar to the Vagrants' signature explosive attack.

The blast has a range of 100m and a proc coefficient of 1.

The blast has a short charging period, during which the player can seek the best place to explode and damage the most possible enemies. The makes this easier, as both items are triggered by taking extensive damage.

The blast also triggers if its cooldown is completed while the character still has less than 25% health left, even if they have not been damaged recently.

The charging time of the blast decreases with increased attack speed.

Math
The cooldown is determined by the formula

The full time between blasts is determined by the formula
 * is the recharge time, after detonation
 * is the charge time, after being activated and before detonating
 * is the detonation duration