When Archfiend of Despair's ability resolves, each of those players again loses 2 life and the team's life total goes down again by 4
The Red Terror also likes when numbers go up
That ability still triggers even if Necropotence is removed from the battlefield before your end step
However, it's effectively providing a consistent card draw, which is essential for control decks , and if you can get it down on turn one, you can activate the card draw ability on your opponent's turn to have eight cards in hand, then give yourself leeway to play two cards per turn and keep activating it for an additional card draw
Amethyst: Amethyst Lorcana cards include lots of magic-users, who come equipped with spells able to manipulate your opponents cards and slow them down
And you can unearth it a second time for more damage doling capabilities