As with Set and Draft Boosters, buying a display may make you eligible for the Buy-a-Box promoask your local store
Arch of Orazca : A land that can be used to draw cards if you have the city's blessing
Street brawler Mega$40-60 raw
Another way to cheat the creatures into play ahead of the curve is Show and Tell, though that is quite the double-edged sword in this environment, so be careful with that
Branded Opening Quick-Play Spell Card Discard 1 card, then take 1 Despia monster from your Deck, and either add it to your hand or Special Summon it in Defense Position, also for the rest of this turn after this card resolves, you cannot Special Summon monsters from the Extra Deck, except Fusion Monsters
Shivan Reef is $6 instead of $3-$4 because its the only painland to see significant play in Modern, where it mostly shows up in budget Twin and Storm lists thanks to the price of Scalding Tarn