Saw everyone doing their thing at the GP's and pro tours with Amulet titan, but i always preferred the Hive mind approach, so i modified their lists to make this monstrosity.
From everything ive played with it its a very consistent kill by turn 4 at the latest, which is pretty good, however people will say its too slow because people have creatures up by then and blockers, but the thing is, im not attacking with this, so its fine on the being a little slower front.
Win cons
Hive mind someone to death with any of the pacts Slaughter Pact, Summoner's Pact and Pact of the Titan (theres no pact of negation because it needs a valid target and is a little too tricky for me to pull off compared to the other ones)
Primeval titan someone to death like all the pro's normally do
Benefits over normal deck
The deck has many better advantages over the average primeval titan version. ive found that nobody expects the hive mind approach at all. every tournament i go to i get round 1, they sit there during sideboarding complaining how stupid Hive Mind is, and how they have no sideboard tech against it, so i really like that fact cause it means youre a lot safer than other decks and dont need to sideboard much. And with the Primeval Titan, i find it being removed doesnt matter, you just make sure your enter trigger gets you Slayers' Strongholdand Sunhome, Fortress of the Legion, the you can Pact of the Titan and do the same as what you could do with the Primeval Titan, its a surprise from nowhere because everyone holds their removal for titans, and then the pact makes them rethink things. or even if you play the pact first so people use the removal on it making it way safer for the Primeval Titan.overall the deck just covers itself in places that the other deck doesnt.
End notes
It plays really well, dont have to worry about removal unlike the primeval titan, just conter spells, but every deck has to worry about counterspells really, so its fine as is. very consistent turn 4 at the latest, and its great to be finally able to play this deck again (I stopped after bloom got banned, and this was my favorite deck)