The next card to feature Melee is Adriana, Captain of the Guard, a 4/4 Legendary Human Knight
Combine Raul with effects like Vedalken Orrery so you arent just limited to casting instant speed spells on your opponents turns, and you can pull ahead on card advantage incredibly easily
Even just one attack from a moderately powerful attack can give you enough counters to bring back the Greatwurm time and time again
Note that the new Eldrazi titans are worded to be less tempting to copy with this, so let that inform you of its power
Warren Soultrader decks seemed close to being good, and Faithless Looting seems like a great way to dig for the combo, enable Unearth, and place Bloodghast and Gravecrawler in your graveyard
It has the least impressive final ability, but its still pretty playable