Like most Pokmon cards, the value of Tyranitar depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Darkness Ablaze)
With the addition of this as a common card, there are more rare slots to be opened up for further development while Foundations is legal, meaning more opportunities for interesting cards
Growing this with noncreature spells is quite doable, and there are a few draw 2 effects in the format too that will trigger it
These cards typically ofer ways to draw more cards, add more punch to your Pokmons attacks, or maybe just help recover from your opponents last attack
Jumbo Cactuar is here, and the flavor is absolutely perfect