Gnoltah Gate

{b}{b}{r}{r}, Sacrifice a creature with power 5 or
greater: Put a counter on Gnoltath Gate.
{b}{b}{b}{r}{r}{r}Remove 5 Counters, Sacrifice
Gnoltah Gate: Create an artifact with hexproof.
This token has "{b}{b}{r}{r}: Create a Demon Seal. Activate this ability only anytime you could cast a sorcery."
"Sacrifice 5 Demon Seals, Sacrifice this Artifact: Target Player loses the game.