Like most Pokmon cards, the value of Parasect 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 (BREAKthrough)
I tried out different numbers and amounts of life loss, but the Sleeper Agent problem was quite real here: it was hard to get this at a rate where it was fun while encouraging you to keep it or give it away in different games
The Special Illustration Rare version is still around 100
You will also be able to see the Energy that will be generated during your next turn
The hack also provided a handful of significant overhauls on the map, and despite being a FireRed hack, it also exhibited newer battle engine such the ones you can see in Generations 7 and 8
Use Hitmontops Piercing Spin to damage both the opponents active and a benched Pokmon