For this second pack, you are guaranteed to pull at least one rare card (it appears the minimum is a 3 Diamonds, but 1 Gold Star, an Illustration Rare, have been more common)
If each booster you opened had, on average, one card, then six packs would get you the six cards you need
Eve's three boss monsters, "Phantasm Emperor Trilojig", "Timelord Progenitor Vorpgate", and "Number XX: Infinity Dark Utopic", as well as the G.O.D
Unique to Modern Horizons 3 Collector Boosters are the serialized, textured, and etched foil cards
Picking from the top 10 decks, we could sort them as Control: Eldlich, Sky Striker Midrange: Branded Despia, Floowandereeze, Swordsoul, Salamangreat Combo: Adventurer Tenyi, Tri-Brigade Lyrilusc, Virtual World, Drytron Combo decks are the fastest