The Moon Spire

Teleport: the Moon Spire enters the battlefield tapped. As it does, it can bring any Moon Elf creature card from the player's hand with it.
{t} to create {2} Moon Elf Mana.
The Moon Spire is the inter-dimensional tower in which the Moon Elves first came to the Prime Material Plane. It can shift along the spacial continuum with every New Moon.