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[15] Secret rare cards feature a diagonal shine effect on the card as well as a holographic name, while ultimate rare cards showcase a gold name along with all gold card attributes and embossed elements

You also cant attack the turn you use this card

UR Ultra Rare UL Ultimate Rare GH Ghost Rare Life Stream Dragon X EARTH Level 8 [ DragonSynchroTunerEffect ] ATK 2900 DEF 2400 1 Tuner + "Power Tool Dragon" When this card is Synchro Summoned: You can make your LP become 4000

Since this is a foil double-sided Discard, it likely came off a sheet that was designed for foil double-faced cards. Collectors who specifically seek out Discard cards have started responding to the Tweet and also say they have never seen one like the card shown in the video