Cathodion

Artifact Creature - Construct 3/3, 3 (3)
When Cathodion is put into a graveyard from the battlefield, add {3} to your mana pool.¹
Cathodions repair the Great Furnace by soldering parts of themselves to the mechanism. Eventually, they become one with the machine.
Illus. Eric Peterson

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: If it goes to the graveyard in combat, you get the 3 mana and can spend it on Instants during the final steps of combat.
• 10/4/2004: The ability is never a mana ability.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (2/13)	Mirrodin (Uncommon) Urza's Saga (Uncommon)