Recycling Bin + Vial Launcher
The combination between
Recycling Bin and
Vial Launcher creates an endless supply of random Potions, solving Ammo with a rather unconventional means of "Reload". Each time a Potion is used,
Vial Launcher deals Damage and grows stronger. With a speedy supply, it can output some solid numbers.
The RNG nature of this build means that it's fairly flexible with the Potions it runs. After all, each use will Transform them into another Potion, meaning you have no control beyond the first cast of each one. It's okay to not be fully optimal, so long as you assemble the three core components.
Before we dive into the specifics, it's important to remember that Transforming items retains their enchantment properties. So in order to maximize value, try to Transform Reagents and/or continuously reroll them to get a solid baseline to work with.
Runic Potion
Runic Potion is arguably the most important Potion of the build and essentially functions as the third piece of the combo.
Runic Potion grants Lifesteal to the
Vial Launcher, giving the build a very reliable form of sustain. Mak is the Hero with the lowest Max Health in the game, so this goes a long way to his survival.
It's very important to not include Weapon Potions such as
Bottled Lightning, as there's a chance the
Runic Potion's Lifesteal will apply to the wrong target. It must hit
Vial Launcher. For the same reason, avoid Transforming and utilizing
Shard of Obsidian as its Obsidian enchant actually becomes a downside.
Energy Potion
Energy Potion is extremely important for keeping the build running as fast and smooth as possible. Its tier actually matters a lot, as every second of Haste will pass over and remain on the item once Transformed.
Additional copies are always welcome if you find them, and you can see that Kripp utilized two to jumpstart the build. Without enough Haste, you'll be more at the mercy of
Recycling Bin RNG.
Vitality Potion
Vitality Potion is the final major roleplayer of the build. Its Healing capabilities are often unmatched, but what's actually even more important is finding the right enchantment for it. You really want to find a Fiery or Toxic enchant, as it effectively converts a percentage of your Max Health into Burn/Poison.
This becomes the primary source of offense in the later stages of the game, whereas
Vial Launcher can begin to fall off in Damage. Similarly, you could probably enchant
Vial Launcher instead, but given the control Mak has over rerolling items it's likely easier to get an enchanted
Vitality Potion.