I was think an easier approach would be to have your deck separated into two piles basic lands and everything else. You would shuffle both. non-basic's would go into the pile with all of your spells.
When ever you have to draw a card you can choose the card to draw from.
Doh seems like somebody else thought of the exact same thing.
I thought of something else. How about a mulligan variant.
Before you draw you hand, you may choose up to 4 basic lands from your deck reveal them to your opponents and then draw the rest of your hand.
You could use this in addition to the standard draw one less mulligan.
That seems simple and pretty elegant. Maybe lower the number to 3 basic lands?
When ever you have to draw a card you can choose the card to draw from.
Doh seems like somebody else thought of the exact same thing.
I thought of something else. How about a mulligan variant.
Before you draw you hand, you may choose up to 4 basic lands from your deck reveal them to your opponents and then draw the rest of your hand.
You could use this in addition to the standard draw one less mulligan.
That seems simple and pretty elegant. Maybe lower the number to 3 basic lands?