Ruby and Weiss symbols appear on the screen before they are flipped and turn into Gem-Knight Ruby and High Priestess of Prophecy cards respectively
It can very quickly spit out a ton of tokens, and those tokens can then be turned into sacrifice fodder for game-winning effects or simply more mana
Innistrad: Crimson Vow Crimson Vow collector boosters, on the other hand, lean far more into the vampire theme, where there are cards with alternate names as seen in Ikoria
If there was an opportunity to synchro summon in the anime, you bet it was done with this card
This can take a little practice to get the hang of but identifying whether your card is legit can help to categorize it properly
Its best when you have your own +1/+1 counter cards, planeswalkers, or spacecraft to take advantage of the free proliferate, even if the Peacemaker eats up a removal spell