Underworld dreams: I'm not sure why
Turn 1: land, Sol Ring, Helm of Awakening Turn 2: land, Jhoira, Mox Amber Turn 3: land (if you drew one), Mystic Forge, Senseis Divining Top From here you can draw your entire deck with Sensei's Divining Top
Mishras Bauble For a while, Mishras Bauble was really only played in Deaths Shadow, Mox Opal, and Prowess decks
They usually end up being value piles that draw tons of cards with things like Mulldrifter or Coiling Oracle, using repeatable blink effects like Soulherder and Teleportation Circle to turn those ETBs into a value engine
Hopefully, we see that these starter decks are built out with some synergy so the cards can work together in strategy
The only trouble is that a couple of other formats arguably needed bans and unbans more than the ones chosen today