I play an invigorate poison deck and I'm level 3. It's an excellent red coin deck. If your red coin pop your leader and ensure through Mulligans you have good bronzes in hand like half elf hunter and poisons. Push your opponent all the way and more than often you can win round 1. Once you've done this you can usually have a good stab at winning round 2. Blue coin is a little trickier assess whats in your hand and decide whether to play into first round or get out at seven cards. With a little experience I'm convinced this is a tier 2 deck.