He is based on the eponymous plant in Plants vs. Zombies 2 with the same name and appearance. But unlike his counterpart, Primal Potato Mine is only able to damage one zombie in his lane upon being destroyed.
His description is a reference to The Land Before Time, an animated movie series created by Don Bluth about dinosaurs.
Statistics
Class: Guardian
Tribe: Root Plant
Traits: None
Ability: When destroyed: Do 3 damage to a Zombie here.
Set - Rarity: Colossal - Uncommon
Card description
Hidden long ago in Hollow Earth, Dinosaurs ran rampant in The Land Before Mine.
Update history
Update 1.22.12
Added to the game.
Strategies
With
Primal Potato Mine can destroy any turn 1 play excluding Planetary Gladiator and Cat Lady, and he is one of the few cards that can remove Quickdraw Con Man completely on turn 1. However, as he does not have the Team-Up trait, you will have to rely on only him to do damage there, unlike Potato Mine.
This essentially makes him very similar to Bonk Choy, except for the fact that your opponent can't save their zombie by destroying him beforehand.
Against
Primal Potato Mine is a powerful removal card early on in the game that can destroy tough 1-brain zombies such as Iron Boarder and Arm Wrestler, so it is advised to treat him with caution.
Although there is nothing you can do if your opponent plays him to intercept a zombie on turn 1, you can either play cards that either move or bounce it like Backyard Bounce or Sumo Wrestler (only move if a vital zombie will be destroyed) or a disposable zombie to basically waste him if Primal Potato Mine is on an empty lane a bit later in the game, although most smart players will only front zombies with this card.
Gallery
Plants vs. Zombies Wiki has a gallery for Primal Potato Mine.