Mew, Ancestral Origin

Flying
At the beginning of combat on each turn, you
may have Mew, Ancestral Origin become a copy
of any creature on the battlefield until end of
turn except its name is Mew, Ancestral Origin,
has base power and toughness 2/2 and has "At
the end of combat on each turn, if Mew,
Ancestral Origin is a copy of a creature you
control, draw a card then discard a card."