So, this is not a deck that wins in tournaments (at least for me),
but it is really fun to play.
Fire was added to get access to poison nova mainly,
also to get some graveyard hate with the pyres.
Ideally you want to see at least one boulder in your game. Opening with an observatory is always good.
Being able to run Sir Lamorak gives you the opportunity to misuse him as a strong removal spell,
if you can strategically hit him with a boulder or cast him on a well-placed bottomless pit.