Get-Rid

Put a card you choose into super gone mode (it can't be graveyard anymore) and when you lose the game you restart your library with your library as the battlefield. When a player graveyards a spell, stuntrap 5 creatures. (To stuntrap, pay that creature {2} plus {t} for each stuntrapping creature.) Then redundant all mana that's a creature unless a player pays {2}Q.
If Get-Rid is a creature, it's Q mana.