Hi, Explaining how the deck works its newer version of Griselbrand reanimator combo which now works instant Called Instant reanimator now pretty neat huh?
You mainly try to get Griselbrand on the table by using Goryo's vengeance before that you need to discard him on graveyard by using Faithless looting or tormenting voice but if opponent has graveyard hate even mainboard you dont have to be afraid you can also use Through the breach hardcast with mana acceleration on the deck or just hard cast it against slower deck's just make sure you dont waste more than one mana acceleration if you are planning to combo since you need 5 mana ramp to off with through the breach i explain later on.
After the griselbrand is in the table you can start to get your kill you start drawing cards with the Griselbrand ability and try to get Worldspine Wurm which you have 4 on the deck or Borborygmos Enraged which you have 2 on the deck AND Nourishing shoal gain 11 life with Worldspine wurm or 8 life with Borborygmos Enraged then it allows you to draw even more cards with Griselbrand.Hole plan of this is to draw much as possible reach point where you have drew nearly hole deck into your hand and then you need to have Desperate ritual atleast 1, Simian spirit guide 4 or 3 if you have 2 rituals. Then you have 5 mana to cast Through the breach if you happen to miss 1 ritual or 1 simian or something else like Through the breach which would be very unlikely but still possible and you happen to have 6 or less card's in deck dont use griselbrand ability anymore you will lose the game for not being able to draw all of those cards instead of that just try to filter manamorphoses and night's whisper's if you have extra mana just make you have 5mana to spend to throught the breach after you reached all cards needed you mainly want to Borborygmos Enraged to table with Throught the breach which you should have in your hand at that point and then use all your lands which you just drew onto your opponent face with the Borborygmos Enraged ability!
NOTE: you can actually do this all i explained on instant / on response example if your opponent is casting splinter twin on his exarch or enemy is trying to Path to exile your griselbrand but if enemy is tapped out or you know the deck doesnt play any of stuff that makes them win instantly or disables your combo you can also do this at your your turn before combat attacker's are declared which allow's you to attack with griselbrand lifelink and regain even 1 more of his Drawing abilites which makes you even more likely to combo off its 7+ more cards its kinda huge but not necessary you most likely always combo for sure if you attack with griselbrand.
Mainly you dont have to hurry with griselbrand kill if you suspect your opponent has something to say about that since the combo work's instant speed also you can wait opponent to do mistake by going on his own combo or tapped out and then response by your own kill. Even tho its possible to get turn 1 kill with this deck which can be very unfair with godlike hand 6 cards is needed so its possible even with mulligan into 6 on the play or mulligan into 5 if you are on the draw and are very lucky with the draw :) You can also play quite goodly over sideboard card's with this deck GY hate doesnt enable you that much since you can still go off with Through the breach griselbrand/World Spine Wurm beatdown plan which is the third plan the deck has which break's the wurm into three after its gone and gives you 3x 5/5 trample wurm's permanently most deck's cant manage that and you beatdown them out that way and its also with instant speed also.
You have pretty hateful sideboard cards by your own at your disaposal 4 blood moons ruin's your opponents colorful manabase making them able not to cast anything. Leyline's against burn's and Discarding deck's that make's your hand go away like jund etc, anger of the god's against swarming creature deck's like Elfs or affinity, and pact of negation's you can also use Boseiju, Who Shelters All in this this slot against Counterspell deck's you can even pay the upkeep cost at your upkeep if you have manamorphose its same with leyline hardcast. and well laboratory maniac if you think your opponent has Leyline's of sanctity by their own which disables Borborygmos Enraged win con and make's alternative win con on this deck which can be quite suprsing to them :)
I will be using Pyroclasm's mainboard since of very creature swarm heavy meta at my local game shop mostly elves but its a free spot on the deck if you want to tune the deck on different kinda meta you can even run Pact of negation's there or more desperate rituals / fourth Night's Whisper to make sure you combo more is more efficient :P