You should get the real OCG version of the magic warrior card, which is a usable version (the original blue version is just a decorative card and cannot be used). The main ways to make three sacrifices quickly are to use magic warriors, giant viruses, flying squirrels, demon shelters, truce reinforcements+hero boys to quickly increase the number of sacrifices, or brainwash. Ghosts and ghosts crisscross to manipulate opponents' monsters as sacrifices, and the road of light is the most suitable way to insert demons.