Untap Lotus Combo (Modern)

This is a combo deck, it uses the combo of infinite mana with Lotus field. It's a glass cannon deck. The opponent must finish you before you activate the combo or should break the combo either by destroying your artifact or by killing your creatures. This is a fun deck and not competitive.

The combo:
The Lotus field gives you three mana, so you can use a creature that untap it so it gives you another three mana. The creatures that do that are fatestitcher and vizier of tumbling sands. Those creatures also untap permanents which will become usefull later.

Then you can spend mana to untap those creatures. Freed from the real and umbral mantle do that. Then repeat the cycle to obtain infinite mana.

How to spend the mana:
The Goblin charbelcher Will do It, and use the mana to untap the untappers and use them to untap the cannon. Another trick is using the umbral mantle to power a creature up to infinite power and thoughness. Though It can still be blocked by a 1/1.

Stats
The combo require 4 cards. On Average you have already 2/3 cards and you have the utilities to fetch the missing cards. With some smart playing you will be able to play it on turn 4/5..

Weak points
Many ways to counter, disenchant, shock, pithing needle. We could add counters, but then the probability to play the combo goes down.