Please don't double post.
Also, Phoenix is my favorite card... So, something like this caught my eye >.>
Purify is the most annoying thing to play against with PDials, Poison Rushes, anything that has to do with Poison or SoSac.
Phoenix is hard to kill (unless they have something to lobo them and then mass kill them all.
Steam Machines offer lots of damage as well as some defense, having 6 HP unupped and 15 upped.
Deflag is good for removing their important weapons, certain shards, or shields, so you can rush damage.
Fire Bolt, Rain of Fire and Fire Shield offer you some CC, allowing yourself to rush and stopping the opponent from dealing too much damage, this is where Purify can be used again, throw it on yourself and you've got some health regen, not much, but some. Freeze will also offer you some protection, stopping them for 3 turns.
Fahrenheit is just a weapon to hold the slot, dealing more damage.
The low down on every card >.>