Commander Masters

Pillar of Origins

As Pillar of Origins enters the battlefield, choose a creature type.
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

As Pillar of Origins enters, choose a creature type.
{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Ixalan

As Pillar of Origins enters the battlefield, choose a creature type.
{T}: Add one mana of any color to your mana pool. Spend this mana only to cast a creature spell of the chosen type.