Oaken Tree

{t}: add {g}{u} to your mana pool
{p/g}{g/u}: create 1 green Oaken Tree Nut
Artifact Token with,
"sacrifice this card, gain 1 life, create 1 2/1
green Oaken Squirrel Token with,
"at the beginning of your upkeep,
sacrifice 1 Oaken Tree Nut Token,
otherwise discard this Token" "