These are lands that can be sacrificed to search your library for a card of a certain land type, be it plains, island, swamp, mountain, or forest
When you do cast a spell with convoke, you get to scry two, picking whatever card you want the most to leave on top or even tuck both of them to the bottom of your deck if you don't like either of them
I especially like the line of questing with Iago to give a shifted Aladdin something to challenge the next turn
Spellmorph Raise Dead shows us a card thats just a Raise Dead that can be cast face-down like a morph creature, but instead of turning it face-up, the spellmorph mechanic lets you cast the card from the battlefield by paying its spellmorph cost
It brings fresh designs and art rare cards by top illustrators like Hyogonosuke (source: )
The back face is a Vehicle and has an "artifacts matter" theme, both of which tie it strongly to Kaladesh