Seat of the Synod

Great Furnace

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color.
When Chromatic Star is put into a graveyard from the battlefield, draw a card.

Sacrifice an artifact: Atog gets +2/+2 until end of turn.

Mistvault Bridge enters tapped.
Indestructible
{T}: Add {U} or {B}.

Whenever an artifact is put into a graveyard from the battlefield, you may have target opponent lose 1 life.

{T}, Sacrifice Lotus Petal: Add one mana of any color.

As an additional cost to cast this spell, sacrifice a creature.
Fling deals damage equal to the sacrificed creature's power to any target.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Draw two cards.

When Ichor Wellspring enters or is put into a graveyard from the battlefield, draw a card.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)

Drossforge Bridge enters tapped.
Indestructible
{T}: Add {B} or {R}.

Sacrifice an artifact: Krark-Clan Shaman deals 1 damage to each creature without flying.