Basicly you spend the early to mid games stalling and preparing for unwinding by playing your relics and ramping/drawing with behemoth and feast; obviously while defending yourself and sites with spells. Display is to help get your relics early it don't be afraid to stop early snowball minions. Arcanum is really good for upgrading and making prime mirror targets while making everything else easier to play out. Buffing a merchant is good for defending, so you could try to go for the same turn merchant combo, ambush merchant usually can guarantee and unwinding hit too. X Temple helps to defend against reanimators, and also is good for upgrading Feasts and World's, but don't be afraid to give killer then switch attack/health on a merchant in a pinch for 5 dmg.
End game is either setting up Mirror/Distortion/Gift/Unwinding, getting each one on top of each other will massively increase your power level.
Before you unwind you usually want a distortion and/or gift in play, and of course a realitivly clear board, all three for a big hit, drawing spells you can use their turn. Also a general rule, the more power the better.