You both must see that this is a difference of metas right?
Soren841, you're used to faster games. You don't need to worry about boardwipes, because those are late-game cards that might not even show up. But you need to start the mana ramp turn 1, which is why
Chrome Mox,
Mox Diamond, and
Birds of Paradise are essential.
WWolf, mass creature removal is a thing in your games. While no one will ever target
Elvish Mystic with
Doom Blade, it might get caught in the crossfire from
Damnation. Lands don't have this drawback, and because it's a slower game, you can afford to ramp on turn 3 instead of 1.