Artifact offering (You may cast this spell as thought it had flash by sacrificing an artifact and paying the difference in mana costs between this and the sacrificed artifact. Mana cost includes color.)

Flying, double strike

Creatures attacking your opponents have double strike.

Whenever you sacrifice another permanent, you may pay . If you do, Furnace Celebration deals 2 damage to any target.

: Furnace Gremlin gets +1/+0 until end of turn.

When Furnace Gremlin dies, incubate X, where X is its power. (Create an Incubator token with X +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals combat damage to a player or battle, create a Treasure token." (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

, Sacrifice Furnace Skullbomb: Draw a card.

, Sacrifice Furnace Skullbomb: Put two oil counters on target artifact or creature you control. Draw a card. Activate only as a sorcery.

Furnace Strider enters the battlefield with two oil counters on it.

Remove an oil counter from Furnace Strider: Target creature you control gains haste until end of turn.

Whenever Furnace-Blessed Conqueror attacks, create a tapped and attacking token that's a copy of it. Put a +1/+1 counter on that token for each +1/+1 counter on Furnace-Blessed Conqueror. Sacrifice that token at the beginning of the next end step.

: Exile the bottom card of target player's graveyard.

, Sacrifice Phyrexian Furnace: Exile target card from a graveyard. Draw a card.