Title to the item transfers to the buyer at that time
Having solid uncommons and commons helps even things out a bit, but even if you open way above average in terms of lower-rarity cards, it won't really make up for missing out on good mythics or foils because the good lower-rarity cards just aren't as valuable as the mythics and foils
It's responsible for many explosive starts, which is why it's often an auto-include, and (presumably) why Frank included it but no additional ramp when doing the math on his Lands count
Since it returns to your hand at the end of every turn, if youre low on life, you can reuse it again and again
Usually, that comes out in how we build our decks, how we play them, the variants and art styles we choose or the alters we have done