Conquest of Ongroch Keep

(As this Saga enters the battlefield and after your
draw step, add a lore counter. Sacrifice after III.)
I: Create 2 2/2 Spirit Knight tokens with
deathtouch and haste.
II: Each player loses 3 life, discards 3 cards, and sacrifices 3 nonland permanents.
III: Gain control of target land an opponent
controls. It becomes a Legendary Swamp
named Ongroch Keep with "{t}: Create a 2/2
Spirit Knight token with deathtouch and haste."