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The -8 is achievable two turns after Tibalt hits the board, and it basically lets you play with everyones graveyards for the rest of the game

Honorable Mention: Primeval Titan + Golos, Tireless Pilgrim This list is primarily geared towards Commander players so it would be strange to include cards banned in Commander, but Id be remiss not to mention Primeval Titan and Golos, Tireless Pilgrim, two land searching machines that deserve their bans

Those include cards featuring Prepared spells, which feel like a greatest hits of spells from Magics long and storied past, like Ancestral Recall or Demonic Tutor, a series of new Elder Dragons, and the awesome new Emeritus cycle

This can easily create huge piles of mana, which you can store up across turns thanks to Fangorns final ability