Shade Wall

Hellbent- As long as you have no cards in your hand, Demons and Horrors you control get +2/+2
Whenever you discard a demon or horror, you
may pay {1}. If you do, instead put it on the battlefield, it gains haste until end of turn. Sacrifice it at the beginning of the next endstep.
"The wall must have made to stand against the demons behind it, so why does it fail now?"