The more I think about it, the more I'm interested in the new
Crystalline Crawler from C16.
Let's say the average case scenario is being able to Converge at 3 on T4, usually in some Grixis or Sultai deck. Assuming you hit your 5th land drop, on T5 you have the option of tapping to put one more counter on it (a fine
Coalition Relic impression), removing them all to add 4 mana of any color combination to mana pool, then having your 5 lands already there to help cast whatever giant threats you might have. That's 9 possible mana on turn 5, and making that 4/4 on Turn 4 isn't a shabby blocker at all. Now, say you had played a dork on T1 or a rock on T2 or T3. You're at a virtual ten mana by this point allowing for actual hardcasting of giant finishers like
Dragonlord Atarka or
Kozilek, Butcher of Truth or maybe even
Emrakul, the Promised End if you've gotten lucky off of a
Satyr Wayfinder + Fetches for card types.
This works especially well with the EMN Emerge Eldrazi at 4cc, lets you cast earlier
Cruel Ultimatums with easier access to the color requirements, and it's also an Artifact Creature for any Delirium or UB Tezz shenanigans. I kind of glanced over it the first time it was mentioned in the spoiler thread and forgot about it till I drafted this on cubetutor:
Wouldn't the Crawler just be insane here? I'm playing some crappy three drops just to have emerge bodies for the Deep Fiend and to buy time, but the Crawler would let me just jump ahead of the curve and completely take over. I could also play the
Distended Mindbender that I left in the sideboard. Maybe even pull off sick value plays like emerging out of TWO creatures with the Fiend and Mindbender and bringing back the
Vengevine. I'll give it a try the next time I get to cube.