It's rare all right. And I have 3 of these stones left after making a Bellossom. At least with Sunflora you've only Sludge Bomb to fear. Bullet Seed might look bad but I'm sure it'll get buffed somehow, too much of a difference in these moves' DPS. Or maybe this move's sole purpose is to generate energy.
GamePress
Is Sunkern rare for you?
I got my second Sun Stone today, but cannot use it on Sunkern since I only encountered a SINGLE one since Gen 2 release. Why is this stupid, boring, useless Pokemon so rare or is it only for me?