To play, each player needs their own deck of at least 60 cards , damage counters, and a way to track how much lore they have such as lore-counters found in an Illumineers Trove (more on the Trove below) or a pad of paper
UB and BG both play well with graveyards, and GU is also value oriented
And since the Equipment gets the soul counters, and not the creature wielding it, we don't have to start from square one if our Hero meets an untimely end
That gets you 24 ready-to-mix Jumpstart boosters, with every pack including 20 cards, all the lands needed to play, and at least one Rare or Mythic Rare card
There are decks out there that simply have no hope of overcoming that amount of life gain, and Heroes' Reunion cast repeatedly can bury them
Not intentionally, of course, but by being so obsessed that it creates something of a barrier to entry for the casual crowd and kids who want to dip their toes into Disney Lorcana