melmetal pokemon card value V - 075/078 - Go - Ultra Rare variation to centering Melmetal ex 153/197 Double Rare

Pikachu (Holofoil) (002/015) While it is possible to grab a good-quality copy of this card for just a couple of dollars, the Pikachu holofoil is the most expensive Dragon Discovery McDonalds card

Giga Impact You may discard all Lightning Energy attached to Electivire

Its ability looks pretty insignificant at first but combined with certain cards, it can help you produce infinite mana, buff your creatures with a gazillion counters and draw at the same time, or even have infinite turns

This bunch of cards, including their numbers, represent what I consider a mandatory minimum, and not necessarily an optimum: The playset of Force of Will should be self-explanatory, as well as the trio of Jace, the Mind Sculptor