At first, Aubrey played Jayton, King Demon Beast of Light. Later, Gagula used ordinary Jayton and chubby cards, as well as the tail of Maga serpent. So I think it should be that this power is really preserved in the body of King Demon Beast Jayton of Light, but things like giant red jelly are reserved for summoning and kept in the body of the serpent. After the serpent was defeated, his strength was preserved in his tail, which was used by Gagula to summon Japang, and he stayed in his tail until Kiah woke up and found himself back and got his strength back.