CardName: Cavern
Cost:
Type: ∞ Land - Cavern
Pow/Tgh: /
Rules Text: {T}: Add {1} to your mana pool
Flavour Text:
Set/Rarity: Multiverse Design Challenge Common
I decided to add this even though it isn't a creature. The colourless "Basic Land" would be doable with card limit as you can set it to ∞. It isn't a basic land so you don't get the odd interactions that adding a sixth type of basic land would cause but you can have any number in your deck.
I guess you could add a rider that it can be searched for as a basic land to enable things like Rampant Growth, etc to find it but I don't think you necessarily have to.
A decent example of the potential use of the card limit; though since this is strictly worse than Forest you could probably make it slightly better and still get away with it. (Stupid 4-card limit. Wish they'd never introduced that. It made the urza lands a lot less useful.)
: Add 
to your mana pool
Designed for Challenge # 019.
I decided to add this even though it isn't a creature.
The colourless "Basic Land" would be doable with card limit as you can set it to ∞. It isn't a basic land so you don't get the odd interactions that adding a sixth type of basic land would cause but you can have any number in your deck.
I guess you could add a rider that it can be searched for as a basic land to enable things like Rampant Growth, etc to find it but I don't think you necessarily have to.
A decent example of the potential use of the card limit; though since this is strictly worse than Forest you could probably make it slightly better and still get away with it. (Stupid 4-card limit. Wish they'd never introduced that. It made the urza lands a lot less useful.)
I was thinking the best line to add would be:
"Cavern counts as a basic land when not on the battlefield."
does everything a basic land can do except when in play. Thoughts?
It's not worse than Forest if you need to fill out the mana base for a Karn EDH deck!