I spent probably an hour writing this without realizing you need to manually save it, so I'll be brief. Use avatars that generate card advantage to fill hand, make a lot of cheap minions for defense and early chip damage. Try to keep your avatar protected during this time while setting up. To close game, switch to [Sparkmage] and cast many air spells, including [Blink] or [Teleport] to position yourself nearby to attempt to fry enemy avatar. [Kythera Mechanism] makes this a lot easier to manage. Alternatively just go wide with an army of buffed undead.