Dumplings is an unpowered cube focused on fast interactive games.
Every color makes use of the graveyard.
Aggro decks are well supported.
Most decks are around 2 colors.
Note: https://cubecobra.com/cube/blog/blogpost/eab352d0-d147-4fb1-9fae-2b97e4919b5f

White Aggro

Aggressive white decks are often mono-white. Look out for cards like Usher of the Fallen and Seasoned Hallowblade. White also buffs creatures well with +1/+1 counters and equipment.

Midrange

Creatures like Elite Spellbinder and Skyclave Apparition help white build value.

Control

White brings a lot to control decks. Boardwipes such as Wrath of God and Balance, powerful threats like Timeless Dragon and Sun Titan, and efficient removal like Oust and Swords to Plowshares.

Blue Aggro

Midrange

Control

Black Aggro

Midrange

Control

Red

Red has strong themes with spells matter and discard.

Aggro

Mono-red aggro is well supported. Efficient threats like Monastery Swiftspear and Laelia, the Blade Reforged, as well as burn like Lightning Bolt and Roil Eruption.

Midrange

Green Aggro

Green doesn't typically play aggressively alone. Usually pairing with red for speed or black for disruption, green's biggest contribution to agressive decks is its efficient threats.

Midrange

Control

Green brings lots of mana, and powerful threats to control decks.