This is red card draw bolted onto red removal, with an impulse draw effect that lets you play the exiled cards until the end of your next turn
While Mox Amber does require you to have a legendary creature or planeswalker in play to add mana, given the nature of Commander and the huge number of legendary creatures and planeswalkers Magic has been printing lately, it is very easy to activate
For anyone who invests in the modern TCG market, this is the card whose value is backed by the most powerful brand in the franchise
Impending takes the edge off the high mana cost by letting you cast it cheaply and combines well with flicker effects like Felidar Guardian
For entrenched Magic players, though, there are also new cards to brew with
Im certainly not going to argue that Legacy isnt too expensive, but the Reserved List isnt the major culprit here