This mod acts as an invasion/infection mod, although unlike most, is entirely player-activated.

The player must find a time rift laboratory, which spawns in deserts and plains, although extremely rarely, the structure itself appears pyramid-like, composed of deepslate, it is topped with rusted copper.

The event itself consists of this:

A time rift opens, announced in the chat, and comes in several different waves, wave 1 is the weakest, wave 2 is stronger, and wave 3 is the strongest. Each wave spawns dinosaurs and prehistoric plants, both of which will invade your world ferociously, multiplying quickly.

You will need very powerful tools to take on these monsters and potentially keep them at bay, along with this, there is a final tool of the mod that is crafted from some of the remains of these dinosaurs, the extinction trigger, when dropped, every single prehistoric creature in your world will finally be killed.

The mod's roster is as follows:

Utahraptor

Velociraptor

Alamosaurus

Ankylosaurus

Carcharodontosaurus

Tyrannosaurus

Spinosaurus

Edmontosaurus

Stegosaurus

Triceratops

Azdarchid

Dimetrodon

Carnotaurus

Allosaurus

Deinocheirus

Dilophosaurus

How the raid works: A few seconds after stepping on the blocks at the time rift laboratory (surrounded by 2 signs), the raid will begin.

Note: this mod also works for park builds or things of that sort, so long as you don't let your dinosaurs anywhere near villagers, animals, or you.

~~the depths beckon~~

Primitive Invasion (Dinosaurs)