That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle
Merry, Esquire of Rohan Equipped and attacking alongside another legend, Merry, Esquire of Rohan draws cards while first strike plus haste turns combat in your favor
Graven Lore Yeah, it's important that blue have great card draw, because blue is good at having good cards, easily the best ability in the color pie
Certain places and stores in Malaysia will be selling the set early on 6th June, like Cardcade Tabletop Cafe.
There are exceptions for supplementary, reprint, or collector sets, which can come with two to four depending on the set and style