A lands-matter theme in a deck with no green cards seems tricky to pull off, and you only get to connive once per turn with Doom
At its floor, it hoses down all of the X/1 creatures in play across the table
Heres how it works: Hedron Archive and Guttersnipe are on the battlefield
Trance 4RG, Tap: Exile Terra, then return it to the battlefield transformed under its owners control
Better yet, Gloom [Pokemon 151] has a similar Ability, which has a similar vibe as the Drizzile / Inteleon [Sword and Shield]
The deck starts by casting a number of powerful creatures with spell synergy including cards that generate token creatures (Talrand, Murmuring Mystic, Third Path, Young Pyromancer, Baral and Kari), ping/direct damage (Guttersnipe, Kessig Flamebreather, Firebrand Archer, Electrostatic Field), card draw (Niv-Mizzet), cost reduction (Kaza, Haighty Djinn), any many more