Pandas, Lazy Summoner

Pandas does not untap during your untap step.

If a creature would die, exile it instead. Players can
cast any exiled card, using mana as if it were any
color. Creatures cast this way are Pandas and lose all
other types.

{p/g}{t}: Exile target creature. Create X 1/2 panda
creature tokens with deathtouch and "{t}: Sacrifice
this creature, add {g} to your mana pool." where X
is the toughness of the exiled creature.