As Mirror of the Forebears enters, choose a creature type.

: Until end of turn, Mirror of the Forebears becomes a copy of target creature you control of the chosen type, except it's an artifact in addition to its other types.

Whenever Spectral Bears attacks, if defending player controls no black nontoken permanents, it doesn't untap during your next untap step.

(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.