For a fire wizard, this is what I would do. This is a rough sketch because I don't have all the cards with me to calculate the total points.
Attack spells: get EVERY fire spell and run AS MANY as you can of each. that way, you can delay bringing out a wand.
Conjuration spells: 4 mana crystals, Wizard Spawnpoint, Fire walls.
Creatures: only creatures that do fire damage. could be stupid or brilliant, but sounds fun to me.
Enchantments: the necessities (Block, Nullify, Reverse Attack, Reverse Magic, Cobra Defenses), the new damage barrier that does fire damage, and cards like Bear Strength to pump up your fire creatures.
Equipment: both types of wands, anything else you feel like you need for protection.
Incantations: the usual (seeking dispel, dispel, explode) plus some offensive ones like Battle Fury, Piercing Strike, and Perfect Strike for your fire creatures.