Elizabeth, Trying a Sword

Last Strike
When Elizabeth, Trying a Sword, enters the battlefield, if you don't control a creature
with "Hydron" in its cardname, search your
library for a creature with "Hydron" in its
cardname, reveal it, then put it into your
hand.
While you control a creature with "Hydron"
in its cardname, Elizabeth loses Last Strike, and
gains +2/+2.