Magical field of the Guards

At the beginning of you upkeep, create a 0/1
Growth Golem token with "{t} add {1} of any
color"
{1} : Create a 1/1 Golem token with
"Sacrifice Golem and add {1} to your
mana pool"
{7} : Search your library for a golem card,
reveal it, and put it in your hand
{10} : Place any number of golem cards from
outside the game onto the battlefield tapped