
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — AssimilateAssimilateGain control of it and put a +1/+1 counter on it. It's a Borg artifact creature and loses all other creature types. target nonartifact creature an opponent controls. (Gain control of it and put a +1/+1 counter on it. It's a Borg artifact creature and loses all other creature types.)
II — Artifact creatures you control get +2/+2 until end of turn.
III — Exile the Borg assimilated with this Saga, then return it to the battlefield under its owner's control.
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.