Out of Place Temple

Out of Place Temple enters play, each opponent
may return a creature card from their graveyard
to their hand.
{t}:Add {u} or {b}.
When you return a creature card from your
graveyard to your hand, transform Out of Place
Temple to Underworld Obelisk.
"I came upon it, a Temple of a completely different
culture. Yet as needs must press on to the Headwater."
- Pizarron, Lost Explorer.