Day 1 Imposter strat hasn't changed: Dump cards, deal early dmg, swap to pathfinder to play more sites and outdraw after playing your first 3 lands out, swap to flamecaller to tap and banish your dead minions to DD, then just ping with any direct damage spell and end the game. If they waste a card to deal damage to you to break your pathfinder you just went up a card and can revert to playing sites normally, same gameplan. Different avatars for different strategy pivots: Ironclad to stall, archimago to recast a finisher, deathspeaker to end the game with an imp or recast death dealer, witch to do the last 2 hp through life loss. A big turn 6-7 play assuming you've been trading out minions is to reposition in front of the enemy avatar by becoming persecutor to step, and then swapping to flamecaller to dump a huge damage projectile into the enemy avatar. The first impression strat for this guy hasn't changed much, but a few cards did get updated.