(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I: Create a blue 2/2 shapeshifter creature token with changeling.
II: Any number of target shapeshifter creatures you control have base power and toughness 4/4.
III: Choose a target creature or planeswalker. Each creature with 4 or more power that you control deals damage equal to its power to that permanent.