Art by James RymanCloned from Tiny Leaders
Welcome to Tiny Leaders Cube!
Introduction
This is my take on the tiny leaders cube.
Brief- 25 life, 4v4, 19 Commander Damage
- 40 card decks, including leader
- No color identity restrictions
- Your leader begins in command zone, and you can cast it from there. If it were to go into a zone other than your hand from the battlefield, you can instead put it into your command zone. Your leader costs
more to cast from the command zone for each time it's been cast from there (This is slightly different from commander) - The monarch is given to the player who takes first blood!
This cube is inspired by a format that never quite got off the ground. Tiny leaders is a variant of commander where only cards with CMC less than or equal to 3 are allowed. (With a few extra "Hits" >3 CMC added for fun, it's cube who cares!) Players play with a 40 card minimum deck size, including their leader (commander).
In this cube players draft three 20 card booster packs, including the commanders. For deck construction, there is no restriction on what drafted cards you put into your deck, but you can only put basic lands that match your leader's color identity. This means that it's okay to put a Noble Hierarch in your 
deck led by Judith, The Scourge Diva.
The power level of this cube is quite high, similar to what you might expect from a legacy cube. There are a few cards included that are banned in legacy, such as Demonic Tutor and Skullclamp.
###This can also be played as a 1v1, best of 3 experience, unlike commander. (Arguably better this way) Games are highly interactive and relatively fair.
The Leaders
Leaders are typically 2-3 colors, but there are plenty of mono color leaders if you can get enough playables in a single color! There are a couple five color commanders as well, with 
activated abilities such as Najeela, the Blade-Blossom. Some may be surprised to see that Grist is technically a legal leader as well!
Some leaders are generically good and flexible for a number of strategies. Some push you to more specific synergies, including artifacts, spells, equipment, legends, graveyard, tokens and counters themes.
Synergy with your leader is very important. Your leader is effectively a spell that you will always have in your opening hand, that you can curve into effortlessly. Most games will see leaders cast several times.
Themes
Themes in this cube are fairly weak, with most decks just playing midrange "good stuff" piles. Due to the CMC constraint, decks are naturally lean and you don't have to worry about your curve as much. There are however, a number of themes that include some strong payoffs. Here are some card examples that play more towards the supported themes in the cube.
Artifacts