Max speed If a source you control would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 1 instead
According to Aaron Forsythe, current VP of Wizards , the design of Skullclamp was changed at the last minute from giving the equipped creature +1/+1 to giving it +1/-1
This is a great card to build up to from Mythical Islands Exeggcute, which only has the Growth Spurt move
Ive dabbled in black/green Golgari myself and I can tell you from personal experience that having the ability to throw cards into your graveyard is a boon
It gets a lot of play in our friend group
Remember, Khorne cares not from whence the blood flows, only that it flows. Obviously, the more that dies when this is in play, the cheaper it becomes, which just makes sense