You can go for a Sorcerer symbol when it appears in the early augments. Don't proceed without the symbol. Maintain around 50 gold interest while slowly leveling up to level 6 and rerolling to keep 50 gold. It's good to get 3-star Cassiopeia and Syndra, and if you have money left, aim for a 3-star Galio as well. For augments, I recommend going for ability power-related augments like Spellblade, Spell Acquisition, or Spell Resource.