Look up some land destruction and tell me how much this should cost.

This is also instant speed land destruction which by itself is avoided. Volcanic Upheaval looks to be an exception - likely because the set also had the awaken mechanic and the card wouldn't help against those that much if it were sorcery speed. Blogatog link.

­Sinkhole

­Stone Rain

I'm looking for a balanced costing to a blue draw spell. Would Ancestral Recall do?

Are you seriously taking Sinkholeinto any consideration? That spell is notoriously problematic. It's a good idea to look at when and where cards get printed Sinkhole was removed for Revised. You know what company that card is in?

At sorcery speed and more this looks much better. The direct damage arguably could be scaled a little, but it's basically a cycling effect, so a free bonus alternate way to cast this.

It's not the Abrade variant I probably would put forward, but it's not a glaring issue anymore.

My goal was to make an Abrade variant. Uncommon sorcery spot

I didn't know how to balance that