The philosophy behind this was to use the field spell to lock the opponent out while controlling either SPYRAL Master Plan or Ib, World Chalice Priestess
C Common Dominus Impulse X TRAP If your opponent controls a card, you can activate this card from your hand
Exchange of Night and Day Exchange of Night and Day Send 1 LIGHT Warrior-Type monster from your hand to the Graveyard, then add 1 DARK Warrior-Type monster from your Deck to your hand, with the same Level the sent monster had in your hand
During your Main Phase: You can return 2 "Wolf", "Wulf", or "Lycan" monster from your Graveyard to your Deck
Por el resto de este turno, tu adversario no recibe dao
Because if it is, then there's no way in hell they would be judgy at him for "cheating." Or else there'd be rules against using bullshit special cards that only some people can arbitrarily use in pro or even serious-amateur matches