Cenote Scout A 1/1 that draws you land or a 2/2 for only 1 mana is usually a good proposition
Finally, nothing too crazy is going on in the nonbasic department: a couple staples for artifact decks, two lands that can be cycled away after our engine goes online, and a few utility lands that have basically no drawbacks in a deck that is mostly colorless
cEDH decks leverage their high life total and extremely low-mana curve decks to draw some thirty cards while 20-life formats like Modern rely on cards like Angel's Grace to survive a negative life total No matter when this is used, expect it to be unfair
Its just an Instant-speed board wipe, so its great
From there, replace inferior ramp (Dreamstone Hedron) with better ramp (Rampant Growth), throw in some recursion (Emeria Shepherd), some protection (Indomitable Archangel), and you're good to go
The last new cards I want to acknowledge are not creatures and aren't related to dragons