MTG Salvation

Say I have an Experiment One(1/1) out on the battlefield and I use hydroform on a land. Does that 3/3 trigger Experiment One to evolve?

Also, does Progenitor Mimic copy counters that are on a creature or just the creature itself and abilities and what not?

I was just lucky enough to get one in a 2014 booster but I don't really need it. should I sell it now or sit on it for a couple weeks/months?

If damage is done which triggers first? or do they both trigger to do quadruple the amount of damage?

In MTG are you able to say for example use cloudshift on a creature that has been declared as a blocker and no damage exists at that point? I remember with Argent Sphinx you were able to use his ability and therefore no damage would be dealt to him or you. Does this still apply?

IF I attack with my Frontline medic that has trample and my opponent blocks with a 1/1 flyer and sends it back to his hand before damage is done. Does trample (2) damage still go through or does the damage cease to exist?

From gatherer Rulings: "If, for example, X is 5 and you choose three target creatures, Fireball has a total cost of {7}{R} (even though its mana cost is just {5}{R}). If those creatures are all still legal targets as Fireball resolves, it deals 1 damage to each of them."

---So you just paid 8 mana to destroy 3 creatures that have a toughness of 1? How is this even considered a good card?

Say i used Oblivion ring on a 4/4 hydra, meanwhile the opponent uses bioshift moving all of the counters of hydra onto another creature. My question is does O-ring stay on the battlefield as an enchantment or does it go to the graveyard because once bioshift resolves(first) O-ring can't target a creature which is already dead?

Thanks!