The rebranding of booster packs as draft boosters is due to the method of playing Draft
If a card is doing well at tournaments, the price is likely to shoot up as people buy it for their own decks
Because your commander is so resilient - low cost, only a creature on your turn, and with a built in self-reanimate power, you don't even really need backup reanimators in the deck
It's pretty absurd to reach 111 life, especially if you have three opponents who know that's your plan, but lifegain decks can do this somewhat consistently if you commit to the bit
Grafting mutations onto Impervious Greatwurm or Thornling creates these monstrosities that warm my Commander heart
If you're looking for positive benefits of your own, you can get lifegain from Ikra Shidiqi, the Usurper, ramp from Arbor Adherent, and card draw from Abzan Beastmaster