Homunculi Guardians

At the beginning of your end step, you may pay {g/w}{u}. If you do, create a 1/1 colorless Homunculus creature token with "{t}: Add {c} to your mana pool."
At the beginning of your upkeep, populate. (Create a token that's a copy of a creature token you control.)
"We believe in Lady Illya. If you mean her harm,
you will die where you stand." - Sella & Leysritt