You can throw most of that power level article out, at least until the dispari-ty between "Uro, Oko, etc." and "cards that aren't embarrassing" gets a little smaller
Players often group these 3 together because players rarely take action independently during any of these steps, but it can (and will) happen on occasion (for example, a player may want to cast Vendilion Clique on their opponent during the draw step to see what they drew)
Price guides still quote raw copies near $5,500 to $6,000, but the authenticated market says otherwise: a heavily played raw copy sold for $8,200 in mid-June, a PSA 1 brought $9,100, and a PSA 3 cleared $11,999 in early July
One disadvantage is that most cards Im missing are very, very rare and therefore expensive
One Day of Peace lets you draw an extra card, and it prevents you from taking any damage for an entire turn
This topic has broad reach and can touch on even more differences between these and other markets