First, talking about stetics (sp?), this card looks very empty...
Second, the art is great.
Third, I really don't know why is it rare...
So, I still remember the times when evolved Pokémon had Poké-Bodies and Poké-Powers, where the effect text was big and the attacks were cool. And they weren't rare...
Rhydon, Stage 1 Pokémon, evolving from Rhyhorn. Only 90 HP! I always thought Rhyhorn had 50-60 HP, and Rhydons 100 HP or more!
There are 2 Rhyhorn to choose from, HL's and EM's, and both have 60 HP...
Attacks on Rhydon: Horn Attack, low cost, below average damage for a full evolution, no effects; Rock Tumble, high cost, nice damage, useful against flying Pokémon.
Not a bad card, but I wouldn't want it on a deck...