Pull data indicates Illustration Rares at roughly 1:8 packs, Special Illustration Rares at 1:91, and Hyper Rares as low as 1:1000
It just refers to die rolls
As an auto 3-of or 4-of in all variants of the deck, this card has fallen 50% or so since the reprinting, but could stand to gain ground before end of summer on the back of another strong finish at this tournament
This year, however, it was reprinted in Commander Masters and you can pick up a copy now for twenty bucks, so if youve been hankering to build a five-color Dragon deck, nows a good time to do it
Yet they still have the same weakness that a Fire Type Pokemon would have, so Delta Species Charizard will take twice the damage from Water Type Pokemon, for example
Anyway, a new Pikachu to find I guess