Heart of Eternities

For each {1} mana any spell would cost, it costs {c} more instead.
(A spell that would cost {2} costs {c}{c} instead.)
{2}: Add {c} to your mana pool. Any player may activate this ability.
"Aether is an cosmic energy, make it tangible like stone and the infinite is unlocked." -Grimoire of the Void, Chapter XII