For a PSA 10 , the surface needs to be essentially perfect: no visible scratches, no print lines, no loss of gloss, nothing
Sorting the cards, sleeving the cards and replacing the sleeves becomes a massive chore, even before you consider needing to lug the cube around
That on top of being on the Reserved List led to its price spiking very high because of the desire for such a unique card that highlights the early days of Magic card design
Not the best thing to flop down on turn two as even the small activation cost will hurt your curving and a 1/1 doesn't get much done in battle
If you do have the Dinosaur though, then youre looking at a powerful ramp spell that not only lets you start casting your Dinosaurs a turn ahead of schedule but also fixes your mana as well
That, or being able to recast all your cards from your graveyard via Yawgmoth's Will