TUTORIAL:

This utility mod allows you to give items and entities different tiers of power. Each tier can provide increasingly powerful abilities, stats, defenses, and other effects.

Features

This mod adds new custom NBT values as stated:

"OmniTier" - This NBT number / interger value controls how "immortal" you want your mob or boss to be and is on a custom range from 1 - 5.

1:  simply boosts health and regeneration

2:  same as 1, but applys instant health and strength

3: same as 2, but constantly sets the health as max health and cancels the death event

4: same as 3, but it kills players slowly

5: same as 4. but kills players much faster

"DamageTier" - This NBT number / interger value controls how much damage you want your weapon to be and is on a custom range from 1 - 8.

1:  deals 1024 extra damage to target

2:  deals 1024 extra damage as  both nomral damage and wither damage to target.

3: deals 1024 extra damage as void damage / generic kill damage, which cannot be blocked.

4:  deals 1024 of almost every damage type and cnanot be blocked.

5: same as 4 but clears potion effects.

6:  same as 5 but sets the targets to automatically.

7: same as 6 but despawns the target.

8: same as 7 but it sends the target past the world border.

9: same as 8 but it does it to mobs around the player

10: Deletes everything temporarily

WARNINGS:

This mod is a Work In Progress.

it may be buggy

CREDITS:

Credits to RandomDudeYeah for the original idea of NBT health and damage.