Sanctum of the Lost

{t}Choose one: summon a 3/1 lost explorer token with haste, or add {g} to your mana pool
{g}{g}tap target creature, give it +1/+3, if it's a lost jungle explorer, draw a card
"Many have gotten lost in the winding passages of the temple, but someday they will return, stronger than before."
-Insungi elder