Loyal Retainers allows for some explosive reanimation of massive power
Also, its nice to be able to show you a long evolution of a deck
Like most Magic: The Gathering cards, the value of Berserkers' Onslaught depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The List)
Conversely, bigger updates like slowing a formats removal or removing a prominent archetype will help designers jump to a new context entirely in the power level landscape
Boneyard Scourge Boneyard Scourge would be a sweet card in a Sacrifice deck, where you could abuse its cheap reanimation to continually sacrifice it for value to things like Disciple of Bolas
Decide early on how you wish to deal with symbols and foreign languages