The death of Rasputin and his being disintegrated into dust. Also Rasputin making his Deal with the Devil in the opening sequence.
And briefly having his skin torn off during the above-mentioned scene so that he briefly became a skeleton!
Rasputin trying to make Anya fall off the edge of a bridge into the icy water below.
Young Anastasia: Let me go! Please!
Rasputin: You'll never escape me, child, never!
Then there's the spin-off movie Bartok The Magnificent. Especially since the main villainess has a potion that turns whoever drinks it into what they were like on the inside, when Ludmilla drinks it she turns into a dragoness of some kind.