Getting these into play will help even a mono-white deck keep the cards flowing freely
1 Foil Rare or Mythic Rare that can have any treatment such as extended-art, borderless, retro framed, double rainbow foil serialized Eldrazi, foil-etched, traditional foil Special Guests, textured foil Special Guests or Double Faced Flip Planeswalker 4 Foil Commons 3 Foil Uncommons 1 Foil full art Basic Lands 1 Retro-frame common or uncommon, or full art Snow Covered Wastes 1 Foil retro-frame common or uncommon, or full art Snow Covered Wastes 1 Foil token While Wizards of the Coast has an in-depth breakdown of collector packs, and different treatments this should help you get an idea of what you can find in the pack
I like Fifty Feet of Rope probably because of that nostalgic bias I mentioned
Released in March of the Machine (yes, finally not a Tolkien inspiration), for five generic mana and two red mana, Etali, Primal Conqueror is a 7/7 legendary Elder Dinosaur with an extremely spicy enter the battlefield effect
Whats your favorite exile card