The rules vary slightly depending on your setting, but I will try and keep it as vanilla as possible and explain if there are any variants to the variant
For a while a blue version of this deck using Stock Up became popular, but red or Rakdos is the more traditional option, with Goblin Engineer and Welder giving the deck more consistency, and Pyroblast becoming a one mana counterspell once Painter's Servant is on the field
Spectacular Showdown is another standout goad option, allowing us to bestow a double strike counter on a creature and goad it for its standard cost or, for an overload cost, place that counter on all creatures and goad them simultaneously, providing exceptional value
The spells aren't exiled after casting either, allowing you to play the same powerful spell multiple times a turn
The Japanese text emphasizes this, while in English, the translation was botched to clarify the exact opposite