Fungal Shapeshifter

You may have Fungal Shapeshifter enter the battlefield as a copy of target creature with converted mana cost 4 or less on a battlefield.
As long as Fungal Shapeshifter has base power
and toughness 3/3 it has changeling (This card is every creature type at all times.).
{g}{u},{t}: Exile this card then return it to the battlefield.