Gisa and Geralf let you cast Zombies straight from the graveyard, creating a loop of value that outlasts wipes and removal
Generally I view Bargain as more of the combo or big control card with Necro being better for agro or disruption decks
Aside from the universally good removal, you can survive with lifegain from Kindly Ancestor and Dawnhart Geist, or just chump efficiently with Spirits from Brine Comber, Heron-Blessed Geist and Whispering Wizard (which triggers from the Aura side of disturb creatures)
With an abundance of low-cost cards and a variety of win conditions, the Amber/Amethyst deck is the most exciting and unpredictable starter deck to play
So much so that our deck runs a bunch of other Deserts (Scavenger Grounds, Sunscorched Desert, Desert of the Fervent, Endless Sands) to provide additional fuel for Ramunap Ruins
Rankle's Prankle also has the dreaded line of text "Choose one or more" so you can always customize it