Evangelion Unit-01

Only up to one creature can crew Evangelion
Unit-01 each turn.
Whenever Evangelion Unit-01 becomes crewed,
it gains Ward {x} and +Y/+0 until end of turn,
where Y is equal to the crewed creature's power
and X is equal to its crewed creature's toughness.
Crew 1 (Tap up to one untapped creature you control
with total power 1 or greater: This permanent becomes
an artifact creature until end of turn.)