RB Kopter Control
Usually starts double mountain for Underground's or Axe Grinder. Then can build 1 lake on the well spot for Bloated Toad in the future. Having only a 2 lake requirement gives the luxury of building extra mountains for Kopter lines. Sunken tower helps extend the range of Kopter and also get Axe Grinder spots. Kopters are very efficient ways to clear the toad that spawn from Bloated Toad. Added bonus if your opponent clears it with a creature since they're then have 2 creatures beside each other.
I experimented with Crystal Spice in place of the Tortoise but found that I usually had to build at least 5 lands anyways for Kopters/Axe Grinders.
My experimentation can be found below...