So i recently pulled this card in a deck and am a little confused on a certain situation.

So Ozmo matianologist states... Fight/reap: heal 3 damaged from a mars creature or stun a mars creature.

Now my partner has 3 mars creatures out on the field, and each mars creature are already stunned. Does this mean on my turn when I fight or reap, I have to heal there creature because I have to apply the effect when able too and all mars creatures are already stunned.

Thankyou. Love the game by the way FFG.

When you resolve Ozmo, Martianologist 's Reap: ability, you can still choose to stun a stunned Mars creature. However, based on the rules for stun : " If an effect attempts to stun a stunned creature that effect does not stun the already stunned creature," so you won't place another stun token on it.