I think Ulamog, the Ceaseless Hunger will be the big payoff and will be the go-to Eldrazi of choice
The idea is that you cast the normal, vertical card (Indulge) from your hand, and then cast the other half (Excess) from your graveyard with the aftermath mechanic
Sorry for the waifu post but I was going through my collection and forgot I had this among the slabs
Getting to scry, make a 4/4, and do 10 damage to a random opponent is just icing on the cake here
And while lots of companies are making some great products, I find the ones with custom items to be the most exciting, whether youre on the giving or the receiving end of them
As said before, having access to Decay in matchups where both players have Connections or one has Connections and the other has Detention Spheres for them is absolutely huge