At the moment, this mod adds 2 power tiers, 2 powers, 1 structure and 3 mobs.

Press the "=" key for an in-game tutorial, NOTE: it may not be the full tutorial. If you want to see what the mod adds, look here:

Mod details

Mobs:

Slightly Dragonified Skelton:

Use Dragon's Breath on a skeleton to slightly dragonify him. The mob sometimes shoots dragon fireballs when hurt.

Upgrader Helper:

Spawned by the Helper Spawner item. Passive, gives growing thorns effect to player which acts like thorns armor. In addition. gives negative effects to spiders and cave spider.

Spider Lord:

Boss of the Spider cave. This boss has the ability of flight, and summoning of spiders. He drops the fabled tier 2 withstander when killed.

Structures:

Spider Cave:

Spawns at 0, 0 low in the overworld, above it are 2 spi-wners (Custom Spider spawners) that spawn a cave spider and a spider when a player is nearby. Another new block is found called the "spi-door" (a spider-based trapdoor.) Currently only one of these structures spawns per world.

Powers:

Tier One:

To begin, craft a Tier 1 withstander block. Craft a Healthstealer to hit a mob to steal health. I recommend that you craft a stolen health meter to measure stolen health by right-clicking. When stolen health is 12 or higher, right click the tier 1 withstander block. Then a tier 1 withstander helmet will spawn high up in the sky, the block will get turned to gold, a blaze spawns. Wear the helmet to withstand tier 1 powers.

Flying tool:

after you have crafted it, right-click to fly! Note: this works mid air.

Helper Spawner:

Right-click to open a GUI, then click the helper you want to spawn, make sure you have a diamond block in your off-hand.

Tier Two:

To begin, kill the spider lord, he drops the tier 2 withstander.

Was Going to be Added

Disclaimer: This was never added and never will be.

There were going to be more tiers than Tier 1 and Tier 2.

Tier 2 and up can be augmented. Augmentation gives the withstander helmet passive embedded abilities. These passive embedded abilities vary from passively applied potion effects, to increased max health.

Augmentation: Done at the augmentation table. Can be done through Gems & essences found in rare structures. They could also crafted. It depends which one. Gems & essences of the same type can be combined to strengthen their abilities. If the Gem/Essence is a too high tier, it cannot augment the too low tier withstander.

Entity 303 boss fight.

More structures were going to come to this mod. Generated like strongholds, in some rings. This even would apply to updating an existing world!