Abyss Watcher

At the end of each combat if you control
more than one Abyss Watcher, you may
meld any number of other Abyss Watcher
creatures you control to create Abyss Watchers.
{b/r}: Sacrifice Abyss Watcher to create an
Abyss Corrupted token.
"The Undead Legion of Farron is a caravan of
Undead. Sworn by the wolf's blood to contain the
Abyss, the Legion will bury a kingdom at the first sign
of exposure." — Hawkwood the Deserter