With Neera in play, you can choose to put the spell youre casting on the bottom of your library, and flip cards off of the top until you get a nonland card, which you can then cast for free
On the other hand, we have Commune with Beavers, focusing on an iconic moment from the game
Add broken cards like Karmic Guide and entomb effects like Buried Alive, then you can just keep recurring Spore Frog once you get a reanimation engine going and prevent combat damage thanks to its fog effect, among other annoying things you can do
Its the perfect home for all those dorky Splicer creatures, and it just kind of works as a great value engine even if youre not doing anything thematic with it
Reliquary Tower taps for one Colorless mana, as do a lot of Lands on this list, but the effect it has is nothing to do with mana at all
The card can do some real damage in any environment with a decent spread of planeswalkers, and is just a nice option to have around to increase the volume of two drops for aggressive decks