Lookin For 4x Dragonskull summits

Looking for 4x of these as well as 4x steam vents. Trying to finish out my grixis control.
In looking for a trade with me please consider i do not trade original Mirrodin cards.
I have some older cards like concordant crossroads and a few betas.
Hit me up if you have what i need!!!
THANKS -woodmster123:)