Paradox Lane

Whenever you cast a creature spell, create a 0/1 colorless Land creature token with defender and
"{t}: Add {c} to your mana pool."
{p/c}{p/c}{p/c}, sacrifice all tapped permanents you control: You get an emblem with "Create a token copy of a card called Paradox Lane at the beginning of your upkeep each turn." Only use this ability from this card once per game.
Down the rabbit hole you go.