Cool Card Design of the Day
3/7/2017 - Here's a simple take on a land that levels up after some use. You can use it immediately, and it starts fixing your mana later.
I like the core gameplay there, but I hate that it leaves a bunch of counters on your land, and keeps making new ones that don't matter at all (unless you have a Giant Fan)
Functionally the same card, City of Industry requires more text, doesn't combo with proliferate, and feels less like building or leveling up, but involves many fewer fiddly counters (and I guess combos with Hex Parasite and Thief of Blood.) Could be time or mine counters to combo with Fury Charm or Mine Layer.