The Skeleton Lich, the Lord of the Undead who guards the Lich Tower, has gained great power over time.

Stage 1: Summons two clones whose bodies are surrounded by three shields and are virtually invincible, may teleport after attacking, but will not melee with enemies. There are two ways to attack, one is a fireball that explodes after colliding, and the other is a dark elemental orb that shoots like an ender pearl and bounces back at the right time to break through a shield's defenses.

Stage 2: After the shield is broken, enter the second state, raise the staff in your hand high, and summon a large number of zombie legions.

Stage 3: When the staff shatters, the Skeleton Lich burns with soul flames, wielding a golden greatsword to melee enemies, but it is already the end of the crossbow.

ps: I don't know why the picture can't be put on, so tangled.