Chewrida

Why not at least one griselbrand?

yea but better chance for hitting a big creature instead of wasting it on a wall haha

this might be true, but if you remove the wall for maybe more ulamogs it might be more useful =p if not then its a good build as is

How about summoning trap?

Gatecreeper vine needs to be in your main deck, he's one of the most valuable cards you will have in a mazes end deck. You can even run progenitor mimic in there just for gatecreeper vine to grab a new gate every turn

drop geosurge and run either pyretic ritual or desperate ritual in it's place.

Chandra's spitfire or kiln fiend would be a good add, also it looks like you'd run thru your hand very quickly, maybe try running a few reforge the soul to bring your hand back and continue burning

You'd also have to replace the artifact lands if you wanted it to be modern, modern banned all the artifact lands that produce a color

Run 4 fabricates, tinker is fun and all, but taking that out will make this legal in both legacy and modern instead of only vintage

throw in crab umbra to put on axebane guardian and you'll have infinite mana (if you control 4 defenders)
I run kozilek, the butcher of truth in my defender deck and he works perfectly, maybe try him out.

darksteel forge, platinum emperion, platinum angel, steel overseer, pallidium myr, arcbound worker, arcbound stinger, cranial plating... all things to look into for what you have here already

smokestack? Decent into madness?

how about replacing experiment one with gyre sage? He has evolve so he's be the same as experiment one but he'll get the ball rolling quicker with the mana so you can drop out craterfoot behemoth as soon as possible =p

Conjurers closet? and lavinia of the tenth would be another good add here =p

yea, it will keep your combo going even if you hit a wall and dont have any more creatures in your hand and you're not at 20 yet in your graveyard

Doesnt win with mortal combat, but thought it'd be fun to mention immortal servitude and exsanguinate would be fun with this deck setup. Draw all your 0 drops with skullclamp, bring them all back with immortal servitude sac them all with ashnods alter and cast exsanguinate for huge life lose and gain. Chances are you'll have disciple of the vault out for that extra life lose with it =p

yea, much better chance of spending 2 dollars for a playset of that rather than 30 plus for the playset of the welder haha. Gamble is an amazingly fun card, I've considered that if I were to ever make this legacy =p

Interesting, that's a pretty neat card, I'll look into it, maybe throw it in when i choose not to play modern, I really enjoy this as modern tho. But the best card for this deck if I were to make it legacy is to acquire goblin welder =p

For shits and giggles you might as well add in blasphemous act, if you have out 2 creatures of any combination of spitemare, boros reckoner, or stuffy doll, then that is 26 damage =]

I just like priest of urabrask because he's free 2/1 if I have 3 mana, it's nice, I usually don't care about his mana cost because this deck getting 3 mana is too easy, he might as well cost 0, disrupt is nice with the draw, but I'm worries about creatures too, not just instants and sorceries, if some plays massacre wurm then my day is ruined haha. Thanks for your suggestions :)