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