Crossover with Yugioh (Only the cards are in this fic, none of the Yugioh Characters)
Discord, over the last few years, introduced the game of Duel Monsters to the Pony populace and it became a huge hit. It introduced new businesses, got ponies to play and make new friends and let off some steam once and a while...
...and, of course, it introduced a new threat to Equestria as well!
Other Characters: Button Mash, Featherweight, Rumble, Silver Spoon, Big Mac, Discord, Snips, Snails and Cheerilee.
Light Shippings:
ButtonBelle
FeatherLoo
SpikeBloom