The Sibsig Ceremony reduces the cost of your creature spells by two generic mana, bringing Acererak down to just one black mana
And that is the main reason why it's so expensive
If you end up seeking them out online, be aware that people may be selling them for a better price as a pair, so shop around on different resale platforms
She deals damage to opponents whenever she or her Soulbonded creature is dealt damage
This makes it perfect for a wide diversity of decks, like +1/+1 counters, planeswalkers, and infect, among others
You get to journey into Faerun by way of MTG mechanics as the merges classic D&D monsters and spells, in a world filled with new lands to explore, treasure to collect and dungeons to delve into