That honor, instead, goes to Leyline of the Guildpact, which is a free turn zero play
The Swarmlord The Swarmlord hits the battlefield incredibly hard as a massive threat that replaces itselfand any other creature with counterswhen it dies, which poses a variety of problems for your opponents
It's probably 80% creature removal, 10% graveyard hate, 10% enchantment removal, but turning a 2-mana removal spell into a targeted hatepiece when it matters is huge upside
Either a Howling MineHowling Mine that lets you draw three, or a rattlesnake that keeps others from attacking you or aids in you milling an opponent out
Mime #36 - Galarian Mr
Only Dark Gengar and Light Dragonite managed to break into that top tier as non-Shining holos, and even then, they sit in the middle of the pack rather than at the top