For example, if you cast Dragonlord Silumgar for 6 mana, then you might hit a Baleful Strix that you can cast for free, and thats being generous
This card is one of the best removal spells ever printed in Red, probably second to Lightning Bolt, and it's so powerful that it dominated Standard and has been seen in Modern as well
Second, for generating creature tokens, I am considering Vernal Sovereign, Aura Mutation, Trudge Garden (again), Selesnya Guildmage (possibly), or Scepter of Celebration, and, for cards that reward me for generating tokens, I am considering Juniper Order Ranger, Cathars' Crusade, Dazzling Angel, and Trostani, Selesnya's Voice
You can also team up to kill an attacker with a bigger butt by multiple blocking
Completing missions, participating in events, and scrapping duplicate cards will award you with Shinedust, which can be used to trade with other players online, potentially helping you collect cards that you aren't lucky enough to get from packs