Bolas killed Ugin in the original timeline, causing dragons to go extinct. Sarkhan saved Ugin in the new timeline but good people still died. It's all Bolas's fault. Bolas manipulated multiple Planeswalkers into releasing the Eldrazi. Half of Zendikar is barren wasteland and a small population as a result. It's all Bolas's fault. Bolas's assault on Ugin prevented Ugin from answering Nahiri's call. If he had come, yes he likely would still have been crossed with Sorin but he would have understood. He could have prevented everything that happened to Innistrad: The madness, the deaths of so many, Nahiri's anger. But no, Bolas chose the worst possible time to try and kill Ugin. It's all Bolas's fault. Bolas sent Tezzeret to control the consulate on Kaladesh, resulting increasing tensions between the Consulate and the Renegades. This resulted an in a war and Tezzeret managed to escape with an important piece of Rashmi's teleporter which Bolas will use to move his undead army. It's. All. Bolas's. FAULT. And now we have Amonkhet, and you all know what's happening here. Needless to say. I HOPE NICOL BOLAS DIES A LONG, HORRIBLE, AND PAINFUL DEATH BECAUSE HE IS A SACKS OF DICKS!