Are you sure you want to play
Tempt with Discovery with only basics in the deck? The chances are high that your Opponents get a bigger advantage out of this than you. If you want to ramp the table, concider
Collective Voyage in stead. It will allow all players to search the same amount of lands, but only basics.
If you want to keep
Tempt with Discovery I suggest adding Ghost Quater or another land that allows you to destroy another land, just in case some1 else searches for a land you don't want to see on the table.
Besides that, there are some budget lands that would help you like
Command Tower,
Canopy Vista or
Cinder Glade. If you want to invest a little more, check and pain lands could come handy.