Custom 21 : Duel Altering
Cards that arn't meant to be used as a fair or ordinary card. Depending on the card, they are either used as either change the game rule completely, or to test various stuff for cards interaction, or just simply outright cheating.br/>
Contingency Contract [999000100]
Normal Spell
Remove this card from the Duel immediately, then draw 1 card if this card was in your hand. You choose how much LP, Draw count or any inherent buff to your opponent or their monster, and debuff to you or your monster, which will applied for the rest of duel. The tags will be calculated to the risk amount.
More information: here
FTK [999000200]
Normal Spell
Change your opponent's LP to 0.