getting in a hit with an annihilator Eldrazi is game-warping enough that losing the clone a turn or two later doesnt matter
In terms of your chance of pulling one of these, it can vary depending on the set
Some attacks have no descriptive text, but most have additional effects that can deal additional damage or affect the battle in some other way
The grading question adds complexity: EX cards are genuinely worth grading here due to PSA 10 premiums on nostalgic designs, but submission costs require careful centering pre-screening
Seeing such a colorful card in black is a lesser-spotted delight (I should know personally: most of my decks involve the color black)
Currently trending for well over $300 on the secondary card market for each card other than the Reshiram ex (which hovers just below that number), these BWR cards havent been seen before in the Pokemon TCG, and their gorgeous and memorable colors make them uncommonly exciting cards to chase