UR Ultra Rare D/D Necro Slime X DARK Level 1 [ FiendEffect ] ATK 300 DEF 300 If this card is in your GY: You can Fusion Summon 1 "D/D/D" Fusion Monster from your Extra Deck, by banishing Fusion Materials mentioned on it from your GY, including this card
Partly because the card itself isnt that interesting
Its a way to get extra damage out of your creatures or simply keep looping them, and it severely punishes anyone who was foolish enough to let their life total drop too low
The Terastal Charizard ex was a major highlight, and the SAR version debuted at around JPY 40,000
In older formats like Legacy and Vintage, it is very easy to get high storm counts
He also has a deck that makes it easy to cast substitute angels, and since he's stiff and tenacious, I think it's quite a threat because he has more options to hit with Mist