Untap, Upkeep, Mountain, Attack with all (medics dealing you 1 and Pyrosaur pumped twice). I'll assume you have no response since you're tapped out. You'll take 8 and my creatures die. Opal Champion. Done.
EDIT: You actually took 7, not 8. The Medics had to die from their first direct point. Readjusted your life.
Neatly trimmed nose hair: 19
Hand: 10
(T) Swamp
(T) Island
(T,T) Mountain
(T) Plains
Opal Champion (When an opponent plays a creature spell, if Opal Champion is an enchantment, Opal Champion becomes a 3/3 Knight creature with first strike.)
Graveyard: Ostracize, Simian Grunts, Goblin Medics, Devout Harpist, Pygmy Pyrosaur, Jhoira's Toolbox, Cloud of Faeries.
RFG:
Sally: 8
Hand: 11
(T,T) Swamp x2
(T,T) Island x2
No Mercy (Whenever a creature deals dmg to me, destroy it)
Graveyard: Gang of Elk, Ostracize, Phyrexian Denouncer
RFG:
Ransac, cpa trash man