A Few Magic: the Gathering websites are usually a goldmine when they have this feature of their patrons and visitors submitting their decklist ideas. Aside from the Top Tier decks in the Standard format, for instance, you can also check on some build strategies that you may have missed out on. Expect them though to be lesser in power as compared to the current metagame decks.
One of the user-submitted Standard decks I have found that I will feature today is probably the newest theme for the Dragon-tribal deck. Its main superstar is Tiamat from the Adventures in the Forgotten Realms, and the ETB ability lets you grab two more Dragon cards from the deck not named as him and as a great card advantage even as the opponent gets to answer it. The rest of the lineup is composed of the best Dragon cards in the current Standard format, and spells to ramp your mana (You Happen On a Glade) and control the opponent’s board (Power Word Kill, Dragon’s Fire). The deck’s core colors are Jund (Black-Red-Green).
Check out the full decklist of the Standard Tiamat Dragons deck below.
Maindeck
1 Beledros Witherbloom
2 Tiamat
3 Goldspan Dragon
2 Terror of the Peaks
2 Korvold, Fae-Cursed King
2 Immersturm Predator
1 Old Gnawbone
3 Frost Bite
4 Dragon’s Fire
3 Binding the Old Gods
1 Blood on the Snow
2 Heartless Act
2 Power Word Kill
2 Poison the Cup
2 Unexpected Windfall
1 Back for More
3 You Happen On a Glade
3 Temple of the Dragon Queen
2 The World Tree
3 Darkbore Pathway
4 Cragcrown Pathway
1 Bonders’ Enclave
5 Snow-Covered Swamp
2 Snow-Covered Forest
5 Snow-Covered Mountain
Sideboard
2 Poison the Cup
3 Devour Intellect
3 Duress
1 Blood on the Snow
2 Fire Prophecy
2 Barrier Breach
2 Storm’s Wrath
Reference: https://www.mtggoldfish.com/deck/4247954#paper