For three months, it was the only thing anyone talked about in Legacy, and helped me win Delver mirrors in Standard
From first-turn kills to completely locking your opponent out of the game, these Decks are the best that Yu-Gi-Oh
Astral seeks the rest of the Numbers because they contain his lost memories (including the reason he came here in the first place)
Liege of the Pit Lord of the Forsaken Lord of the Pit Maha, Its Feathers Night Mindwrack Demon Minion of the Wastes Mosswood Dreadknight Nameless Race Necravolver Ob Nixilis, Unshackled Oni Possession Ormendahl, the Corrupter Phantom Train Phyrexian Librarian Phyrexian Negator Phyrexian Obliterator Razaketh, the Foulblooded Rite of Belzenlok Rot-Curse Rakshasa Savanti Romero, Time's Exile Scion of Darkness Soulflayer Spawn of Mayhem Spirit of the Night Subversive Acolyte Sutured Ghoul The Fire Nation Drill The Grim Captain The Speed Demon Thought Gorger Tragedy Feaster Tyrannical Pitlord Urborg Scavengers Vile Mutilator Void Maw Wave of Rats Withengar Unbound Wretched Bonemass Xathrid Demon
While this does require some setup, getting three Lessons into the graveyard is easy with Talent in play
Sakura-Tribe Elder is my favorite example of this, letting you play it out and absorb a bit of damage before sacrificing itself for value