It's not just that it gives you loads of death triggers to drain your opponent
Its sort of a hybrid between the banlists of Legacy and Commander: removing most of the Vintage-tier fast mana and resource-denial cards which allow turn-one kills, but also cards that are simply too good on rate: Treasure Cruise, Uro, Fierce Guardianship and White Plume Adventurer to name a few
A Tiefling barbarian, she has a sense of humor, raging temper, and a dark history that means she has a burning furnace in place of her heart
Delve is one of those great Magic: The Gathering abilities that can quickly spiral out of control if put on the wrong card, and in some cases, the right cards
You should definitely still take the first copy or two, but I think its also necessary to look for less conditional answers like Flood the Engine and Trade the Helm