Unknown Egg

Unknown Egg enters the battlefield face down.
{1}{u}: Turn Unknown Egg face up. It gets +2/+2
and becomes a Bird in addition to its other types.
{1}{r}: Turn Unknown Egg face up. It gets +2/+2
and becomes a Dragon in addition to its
other types.
{1}{w}: Turn Unknown Egg face up. It gets +2/+2
and becomes a Cat in addition to its other types.