Large spells advance the game plan while also threatening opponents at random, which creates tension at the table
Note that there are no "exile" or "sacrifice" triggers post attack or EOT, they'll stick around until this guy leaves
As Kaladesh spoilers are already in full swing (actually kind of winding down at this point, although were still missing quite a few of the story moments as of this writing), it seems like a good chance to look back at Shadows over Innistrad
Nexus of Fate just goes to your library rather than the graveyard, making most counterspells useless against it
This is an easy way to get one last big push of lore to end a game, or just get a bigger lead to add more pressure to your opponent
Its synergy with card draw mechanics makes it a consistent source of pressure, and its power and toughness scaling with your hand size makes it a formidable presence on the battlefield as well