MC, known as ＭＣ (ＭＣ) in the Japanese version, is a character in Yu-Gi-Oh! 5D's Duel Transer. This is a video game depiction of MC, a character from the Yu-Gi-Oh! 5D's anime. He is encountered in the Yggdrasil Entrance.
Despite there being 3 copies of "Lucky Chance" in this Deck, that card is ultimately useless here, since it only works with monster effects that require only 1 coin toss. The only monsters in this Deck whose effects involve a coin toss are "Gambler of Legend" and "Sand Gambler", both of which require 3 coin tosses for their effects.
Several seemingly "out-of-place" cards are included in this Deck for references:
"Shapesnatch" and "Magical Hats" (the latter having a Japanese name that translates to "Magical Silk Hat") are likely included in this Deck for their feelings of "dapperness" that they evoke, which this character also evokes in the anime.
"Noisy Gnat" is likely included in this Deck as a reference to this character's personality, since that card's Japanese name translates to "Rambunctious Insect".