A post from the Niantic Support account on X cites a Google Cloud platform outage impacting load times and access for a variety of Niantic mobile games
The only set that seems to be missing is last months Secluded Springs, as its still super fresh
Other prominent mechanics that incorporate (or freely enable) sacrifice include: Food, Clues, Treasures, Sagas, Unearth, Encore, Evoke, any other temporary tokens such as Faerie Artisans or Hostility, cards with Upkeep, Quests, Exploit, Casualty and now Bargain
Read on to know the pull rates per rarity and card when opening god packs and more
But you know what
That said, as his Pyro Tuner at level 3, Neo Flamvell Hedgehoghas an excellent effect in its own way, so it can be said that the priority has been slightly lowered