Timeless Elder

At the beginning of your upkeep, put one age counter on this card. If it has 10 age counters, exile it
{g}{u}: counter target spell with converted mana cost 3 or less
{2}{g/u}: put a 1/1 blue or green elemental creature token on the battlefield if this card has 5 or more age counters
{5}{p/g}{p/u}: remove all age counters from this card if this card has 9 age counters