Costing Lessons is weird. On one hand, we have an upgraded Spark Harvest with a steeper additional price at uncommon. On the other hand, we have a six-card Adventurous Impulse effect that swaps the ability to find a land for 3 life, and it's a rare.
Also soo much removal at common and uncommon and half of them deal with walkers.
Also too much exile removal. There's no point in having recursive creatures anymore because there are a million ways to deal with them. I guess spell meta is better because you get answers and are harder to interact with.