Fogen, master shapeshifter

{u} This cards subtype becomes any subtype of your choosing.
If this card is a frog, its power and toughness
both become 3, and this card gains Skulk, and
protection from all non frogs. If this card is a
human its power and toughnes both become 6
minus the number of humans on the battlefield.
Otherwise, its power and toughness are both 2
plus 1 for each creaturesof that type you control.