Cool Card Design of the Day
3/2/2017 - Inspired by MaRo's review of dual lands, in particular the ability to choose to use your land immediately or let it enter the battlefield tapped… How about a dual land that ETBT, unless you need the mana immediately (and colorless will do)?
That's sort of useful, but I hate that this land will often sit around with a dumb counter on it forever.
This version will most always end up free of counters, and the counters it does have represent something of value. In addition, making it more Gemstone Mine means we don't need to print a whole cycle of these awkward lands.
Finally, a much simpler idea, chasing the same basic goal:
Yoyo Bog is like the "fixed depletion lands" (Cloudcrest Lake et al), but with the down-side that it puts you back a turn when you've got more lands in hand, and the up-side that you can replay it at no cost when you don't, or even get two mana out of it in a single turn.