#17 X6 is literally X7 without one of its less used components, you could ignore it ever existed and no one would ever notice
Casting it at the right time leaves you untouched while your opponents swing wildly at each other, breaking alliances and clearing the way for your own follow-up
CR COLLECTOR'S RARE UR Ultra Rare Voici la Carte (Today's Menu) X SPELL Reveal 2 "Nouvelles" monsters with different names from your Deck, your opponent chooses 1 for you to add to your hand, and you shuffle the other into your Deck, then you can add 1 of these cards from your Deck or GY to your hand based on the Monster Type added to your hand by this effect
In fact, its very often used to cast all the other cards on this list well ahead of schedule
Then if that creature is a Mutant, Ninja, or Turtle, double the number of +1/+1 counters on it