Of the actually good ones this now sees the least play and rightly so I would say
Rush of Knowledge (Onslaught/Legions/Scourge) The common consensus in Onslaught/Legions/Scourge draft was that you wouldn't want to play a deck with more than two colors, since there weren't many cards which allowed you to "mana fix" - that is, fetch a third color of mana
It destroys another card you control to draw, and if that card was a Pendulum Monster Card, you get an extra Pendulum Summon for your Performapal, Magician, and Odd-Eyes monsters
You'll pay the memory cost (memory moves right)
PS Platinum Secret Rare QCSE Quarter Century Secret Rare Elemental HERO Prisma X LIGHT Level 4 [ WarriorEffect ] ATK 1700 DEF 1100 Once per turn: You can reveal 1 Fusion Monster from your Extra Deck, then send 1 of the Fusion Materials whose name is mentioned on that card from your Deck to the GY
Turn 12: Yami Yugi Yugi draws