Hemerald

Wow ! Nice combo with Howl of the horde !
Think about playing Oath of Jace instead of Artificier's Epiphany. It's not an Instant, but you Draw 3 Discard 2 instead of Draw 2 discard 1.

No it's not goes back to the graveyard
unfortunately, when you cast the spell Temporal Trespass or Part of the waterveil they are exiled. (see the cards)
So you can take extra turn but limit by the number of Extra-turn spells you have in your graveyard.

Sorry :-(

Thanks !
Yes only few Eldrazi have direct effects when they arrived on board and they have alternative costs or they need to be cast from hand, like Ulamog or Kozilek. So even if you reanim them, they do not have an impact until the next turn.

Hello !
Mirror mockery will make a copy of the creature, but not the effect. So when your token come into the battlefield it will be a 0/0 and you will have to choose another instant or/ sorcery in you graveyard to be exiled.
it worked the same with +1/+1 counters. If you copy a creature with +1/+1 counters on it, you will copy the creature but not the counters

But with all dig card you play, you can play temporal trepass from your hand with the delve :-p
Add Jace vryn's prodige to dig more and to recast sorcery from your graveyard.
See ya !

Yop ! So I tried the Sultai version.
First, Loam Larva is very good to have every time a third land turn 3
Then Natural Connection is very effective, and it made me able to cast necromantic summons Turn 4, and I can often play Eldrazi from my hand.
But i finally i made some change. Deadly Wandering does not work in my version, because i have always 2 or more creatures on the battlefield. I put Tasigur The golden fang in the deck. It can be cast turn 3 with a Taigam's scheming, and his effect is very good.
I took off Den protector. Not effective in the deck. I always discard it.
I also put 4 Jace, Vryn's Prodigy. Like i said before, the deck isn't budget anymore... :-p
I put 2 Treasure Cruise in, and out 2 Artificer's Epiphany, because i often had a empty hand.
I am still working on and will link you the list when it's finish
Anyway thanks for the main idea of the deck ;-)

I tried to make your deck in a Sultai variant. I have not tested it for the moment, but adding the green may allow you to cast necromantic summon turn 4 instead of 5. So turn 4 : Eldrazi on board. Turn 5 enchantment deadly wandering.

I think playing Sidisi brood tyrant in this deck will not be a good choice. First there is not enough creatures in the deck and there is a few chance only to have 2/2 Zombis on the battlefield. Then the risk is to put the bad cards in graveyard.

Adding green change a few things, and the deck isn't budget anymore, because to run 3 colors you'll need lands.
You can try only with Yavimaya coast, Llanowar wastes, and evolving wild.
So I add Fetch land and more.
Green also add Den protector, to put back essential cards. (not budget)

here the deck list :
//Creature (17)
2 Bane of Bala Ged
4 Breaker of Armies
3 Den Protector
4 Loam Larva
4 Salvage Drone

//Enchantment (2)
2 Deadly Wanderings

//Instant (11)
4 Artificer's Epiphany
3 Dispel
4 Natural Connection

//Sorcery (10)
2 Bitter Revelation
4 Necromantic Summons
4 Taigam's Scheming

//Land (21)
4 Bloodstained Mire
2 Cinder Glade
3 Forest
2 Island
3 Polluted Delta
2 Sunken Hollow
2 Swamp
3 Yavimaya Coast

Need to test now !