Old Wolf of Farron

Can't attack or block, Immune to Black, Can only be killed by "The Abyss.", Hexproof
{b/g}{b/g}{b/g}{t}: Summon an Abyss Watcher
{b/g}{b/g}{b/g}{2}{t}: Sacrifice a friendly Abyss Watcher. Give your Abyss Watcher's +1 +1
If "The Abyss" enters the battlefield gain +2 +2, remove cant attack or block, and give your Abyss Watcher's +1 +1
"The Old Wolf is a tired, ancient creature. Yet if the time comes, it will rise one last time to vanquish its mortal enemy."