Some cards are designed mainly for playing, while others are highly sought after for their rarity and artwork
Even in the much-explored lifegain archetype, it's an underrated white commander
The copy is created on the stack, so it's not "activated." Creating the copy won't cause abilities that trigger when a player activates an ability to trigger
All of those are solid additions
The Dungeons of Death Adventures in the Forgotten Realms Commander Deck set includes 1 ready-to-play deck of 100 Magic cards (2 traditional foil, 98 nonfoil), 1 foil etched Display Commander (a regular-sized copy of the commander card on thick cardstock, etched with textured foil), 10 double-sided tokens, 1 life tracker, 1 deck box (can hold 100 sleeved cards), and 1 reference card, all in reduced-plastic packaging.
And then when you layer it into tokens, creatures that sacrifice, creatures that have death triggers, and more, you get one of the single most powerfully broken cards ever printed