You can just leave him up and fly him around from location to location each turn, gaining lore as you go
Forward progress is never quick and easy, but taking breaks during the win droughts can help you avoid overall fatigue and further aggravating bad play
Paradox Engine I cant believe they printed a card this good thats colorless
If you do, search your library for a planeswalker card, reveal it, put it into your hand, then shuffle
If buying locally isn't an option for you, third-party retailers like CardKingdom, TCGPlayer, and eBay will be able to fulfill your need for cardboard
Dungeons can be accessed when a card has the phrase Venture into the dungeon on it, and has you journeying through different iconic D&D dungeons: Tomb of Annihilation, Dungeon of the Mad Mage and the Lost Mine of Phandelver