Purchasing a MythicalPack will grant EVERYONE online a pack. When a pack is opened by a player, they will recieve 5 real Pixelmon! You can battle, collect, or trade these Pixelmon, it's up to you.
Each Pixelmon you receive has a decent chance to be Shiny, and if you are lucky Legendary!

The Pixelmon inside of this pack include:
Very Rare:
Mew

Rare:
Celebi

Common: 

Exeggcute, Snivy, Morelull, Ponyta, Larvesta, Salandit,
Salazzle, Magikarp, Finneon, Chewtle, Cramorant, Pikachu, Joltik,
Dedenne, Elygem, Swirlix, Flabebe, Floette, Slurpuff, Mankey,
Primeape, Geodude, Koffing, Purrloin, Liepard, Venipede, Whirlipede,
Pidgey, Pidgeotto, Eevee, Chatot, Gyarados,
Aerodactyl, Pidgeot, Exeggutor, Serperior,
Vaporeon, Volcarona, Raichu, Golem, Tauros,
Servine, Shiinotic, Dhelmise, Rapidash, Magmar, Lumineon, Drednaw,
Electabuzz, Galvantula, Sigilyph, Florges, Beheeyem, Graveler,
Stonjourner, Weezing, Scolipede, Druddigon