The Paths Between

Improvise, Delve
Spells you cast from your exile, graveyard, and
library may be cast as though they had flash.
{t}: Remove a counter of your choice from target
card in exile or on the battlefield.
At the beginning of each end step, untap this
artifact. Then, pay this card's mana cost or exile
it. You may use its Improvise and Delve abilities
to help pay this cost.