I have to admit that I played a little with
Hedron Crawler and I cut it. Being unable to block a scion is pretty bad.
I did have 3 of the blue 2/3 pseudodorks. I wasn't even ramping and I didn't even have that much in the way of colorless reqs.
I drafted Saturday night and had a blue/black control deck splashing green with two
Hedron Crawler's. They were great for me.
I would want to see your deck list to see why unblocked scion's were so critical. I wanted to ramp though, plus I had use for the colorless mana so that is probably why they were much better for me. I had 5 different ways to "draw" cards.
Baloth NullDeepfathom SkulkerProphet of DistortionComparative AnalysisKiora, Master of the DepthsI ended up running 18 lands, both Crawler's, and a
Cultivator Drone. 21 mana sources were right in this deck, I had such a high curve.
I ended up 2-1, losing 2-1 to a green/white/red equipment/support deck. He made really big creatures that I was unable to deal with. I had no problem in my other two matches.