Gem of Sorcery

{t}: Add {c}{c} to your mana pool.
Terrestrial, Celestial and Solar spells you cast cost {2} less.
Sorcerers of old devised a way of storing raw, solid
essence inside these stones so that it could be drawn
and used to fuel spells of power. The secret is long lost,
but some of these stones still exist through the world
and are avidly sought for.