Joel, Fatherly Figure

First Strike.
Partner with Ellie, Rambunctious Youngster.
(When this creature enters the battlefield, target player
may put Ellie, Rambunctious Youngster into their hand
from their library, then shuffle.)
Whenever you Amass, create a Code token,
once you reach 12 Code tokens you unlock the safe.
If you have unlocked the safe, for the rest of the
game, equipment you cast costs {2} less to cast;
and whenever you Amass, tap target creature.