Having more total lands means we're less likely to have games where we are mana screwed
Price your pulls on sold data , eBay's Sold Items filter and TCGplayer market prices, and confirm the exact card number and rarity first, a base Darkrai and the #120 Mega Hyper Rare are different worlds
Its also less good in Voltron, as youre not going to want to sacrifice your creature to cast it
It doesnt have many applications outside of EDH unless you wanted to get really spicy with Sorin, Imperious Bloodlord in Timeless, but in EDH it chews away at your opponents resources with a few clones
Standard is Magic: The Gatherings most-played 60-card Constructed format, where players build decks from the most recently released sets
There's no wrong answer except doing nothing and letting your cards sit in a box depreciating