While using Rare Candy and setting Larvesta as your buddy Pokmon will help you gather this candy, it will take you a good amount of time to collect 400 Larvesta Candy
Spire Serpent is probably better than Shoal Serpent, I guess
Terras second ability is the more exciting one, allowing her to reanimate creatures directly into play if she can attack unblocked
In addition to the obvious things like Syphon cards (do some effect to each other player, gain benefits depending on how many other players this hit), there are cards that affect a random opponent, cards that give everyone the game the ability to join forces to create a big effect (for example, a sorcery that lets everyone pitch in mana and then lets everyone put lands into play from their decks), and Enchant Creature cards sorry Auras that boost the creature while preventing it from attacking to
Criminals can also find items that will likely sell for more before they open any packs
You can't exile more cards than the generic mana requirement of a spell with delve
