It was made known to me that trample requires only lethal damage to be dealt to a creature for the rest of the damage to go through...thus only 1 damage is required by a creature with deathtouch to kill the creature and the rest can go through.
Example:Grave Titan + Kessig Wolf Run for 0 to give trample. Say the opponent blocks with a Solemn Simulacrum . You only are required to assign 1 damage to kill the sad robot and 5 is dealt to the defending opponent.
Deathtouch + Trample = nothing new. I've been doing it since M10, when the rulings changed.
I would honestly just make this into Wolf Run Black. It would be faster, more consistent, and would likely win more matches for you.