
You may play lands from your graveyard.
By isolating liquid aether at room temperature, foundry hand Jitya Reyath has given us a glimpse of raw aetheric matter—the very stuff of the cosmos.
Illustrated by Chris Rahn · Kaladesh Inventions · #11
2018-07-13
Crucible of Worlds doesn't change the times when you can play those land cards. You can still play only one land per turn, and only during your main phase when you have priority and the stack is empty.
2018-07-13
Crucible of Worlds doesn't allow you to activate abilities (such as cycling) of land cards in your graveyard.