New Mob: Deep warrior

I have an idea for add-on 1.19 in the new building of the deep dark city, add a new mob:Deep warrior . He will spawn in the deep dark city in an amount of 8-10 mobs. Regarding his appearance: His height is 2.5 blocks. that he has overgrown rocks with sensors, he slowly moves, he does not prefer armor, this mob has 20 hp, he has a shield with which he protects himself, and he has a stone sword, and this mob does 5 damage, when this mob strikes then for 2 seconds,the darknes effect is applied to you, this mob has one feature if it died mob will come to him ,when he receives it,he moans stronger, he has 4 stages, at the first he will have 21 hp and 6 damage, at the second 22 hp and 6 damage and speed will increase even more, at the third stage 22 hp and 6 damage, and at 4 stages 23 hp and 7 damage and even more speed.Please listen to me . And make a cool and decent loot in deep dark city . Thanks for listening. Bye-Bye