StackMobs Plugin (1.12.2) – Bukkit, Spigot, Paper - 9Minecraft.Net
1.2.14 Release - RuneLite
There's a thing where if you splash a speed 2 potion before 2 horses breed the horse will keep that speed and it is stackable. This is what doing that 22 times
Potion Stacker | SpigotMC - High Performance Minecraft