The Samurai and the Princess

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Target creature you control gains vigilance, lifelink, and first strike until end of turn.
II — Search your library for a legendary creature card and put it into your hand. Then shuffle your library.
III — Each player chooses up to one target creature they control, then sacrifices the rest. You may choose