Mana source

Mana source is an obsolete card type that was only found on <c>Culling the Weak</c> and (beginning with the printing in Mirage until Urza's Saga), as well as the non-tournament-legal <c>Blacker Lotus</c> and <c>Jack-in-the-Mox</c>. All mana sources would have been interrupts under pre-Mirage rules, and are now instants. Abilities that were played as mana sources were previously played as interrupts, and are now mana abilities.
==Rules==