I can't understand how I can check sentence 1. Can you please examine the other sentences, too. Thank you very much for your invaluable help!

1) His hand is more likely to turn red the great gathering of seas, making the green of the water red, than being made clean by all the ocean.
2) If I finish the sentence after the second red the meaning is not clear:
3) His hand is more likely to turn red the great gathering of seas, making the green of the water red; than being made clean by all the ocean.
4) She admits that her hands are of the same colour as his. However, she would be ashamed to have a coward's heart. In other words, she is not ashamed of having helped her husband committing the regice.
5) She doesn't feel guilty for planning the regicide.

1) His hand is more likely to turn the great gathering of seas red, etc....than should be THEN?

3) Here's the problem: His hand is mor elikely to turn red. It's the hand that is red. VS His hand is more likely to turn the great gathering of seas red = now the water is red. See the difference? Than" is still bad.

4) having helped her husband commit....regice? Does this have to do with Pokémon? I don't remember that word in this piece of literature?

Sra