Another angle is to fill out the deck with Thallids and other creatures that make Saprolings, like Utopia Mycon, Elvish Farmer, and Nemata, Primeval Warden
Toxic Deluge is one of the cheapest boardwipes ever printed
Black Lotus is a mono artifact (meaning it can only be played once) with no casting cost (so no mana is required) that allows a player to add three mana of any single colour to their mana pool
I love themes, and Odyssey brought with it enough Squirrels to make a theme deck featuring two of my all-time favorite Magic cards: Deranged Hermit and Squirrel Wrangler
For some time, this was the premier example of this mechanic, as this card saw some play in various Infect decks in Modern as an answer to Card not found
Although it takes the form of a competition, the participation method is simple and the atmosphere is light, so it is an event that beginners can participate without feeling burdened