Drawing cards is probably the strongest thing you can do in Magic next to making land drops, and youll find that you win more games if you can reliably see more cards than your opponents
The Rack was sort of like a Dingus Egg, except much cheaper
(If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.) Abilities you activate that aren't mana abilities cost less to activate
Otherwise, be prepared to face Thoughtseize every time you play against a black deck, be it against midrange decks like Jund, Deaths Shadow, Rakdos, Dredge, or combo decks like Yawgmoth or Esper Reanimate
Sadly there's no MTG Arena code for LotR cards - but check out the guide anyway, there's always a lot of fun stuff in there