San (Gwenna, Eyes of Gaea)

{t}Add two mana in any combination of colors.
Spend this mana only to cast creature spells or
activate abilities of a creature or creature card.
Whenever you cast a creature spell with
power 5 or greater, put a +1/+1
counter on Gwenna, Eyes of Gaea and untap it.
"That's enough! I'm not listening
to you anymore!"