Chained heart portal

"When Chort'Yival picked his servants, he did so loosely, by the tones of their screams or the patterns of whip lashes they might recieve, but the machinations of hell should not be taken so lightly. With great rotundity and power did both the demonlord and his underlings grow as he rose and hatched plans to create a portal to Sladkaytrav crypt, and when it came time to power such a device it was not wise to forget the enemies you made along the way. With patronage from a rival a talented dretch with a distinctive scream and patronage from a rival had the perfect suggestion for the artifact to invade the earthly realm. "

I needed a portal for my players to fight demons from and thought your standard magic swirl or pool of blood was too basic, so I figured some gross demons have this giant heart they chain to the ground and can be birthed from.

Stick a little red LED in there and print with thin walls and you should be golden.

There are a couple holes in the model that are a b