Forum:Fire Trooper + Macro Cosmos

Can you use Fire Troopers effect when Macro Cosmos is on the field, or does it actually have to be in the graveyard to inflict damage?

And also, when you use the effect of search cards such as Sangan, A Cat of Ill Omen and Reinforcement of the Army, do you have to show the card to your opponent? Thanks 80.168.173.190 19:09, 15 June 2009 (UTC)