Whenever an Ally enters the battlefield under your control, you may have Kirby become a copy of that card until end of turn, except its name is Kirby, Friend of the Stars, it's legendary in addition to its other types, and it has this ability. If you do, Kirby gets +1/+1 until end of turn.

{W}{U}{B}{R}{G}: Search your library for an Ally card, put it onto the battlefield, then shuffle.