Luckily, MTG Arena has a fantastic tutorial that will guide you through everything that you need to know to sling spells in the five colors: White, Blue, Black, Red, and Green
Final Steps If the card starts curling backward, you need to dehydrate the cards by adding a humidity-regulating pack to the box where you store the cards, which can vary from 55%-65% humidity
Most of that stuff is just copyright info, but the information to the right of that line is what is known as the collector number, and it tells you where the card falls in the set, should you wish to organize your collection in that fashion
A *LITERALLY* UNTAPPED RESOURCE Convoke, conspire crew, harmonize, saddle, and now station: these are the mechanics which allow you to pay costs by tapping random creatures you control
Liliana, the Necromancer I love to clown on Planeswalker Deck planeswalkers, and Liliana, the Necromancer is pretty meh, though Ill give it points for not costing 6+ mana