Do consume effects (ei Ur’zul) remove minions from the pool?
Does a golden minion tie up three copies from the pool? When you sell it, do they all go back?
When you discover a minion, does it come from the pool? What if all the normal copies are already gone? Does it matter if you discover from a player (ie Scabbs)?
Thanks 
only buying and either holding or playing a minion and having it on your board count as removing it from the pool
gold takes 3
if you own it, its not in the pool
I seem to remember someone said that discovering a minion takes it from the pool, but I’m not a hundred percent sure. No idea how it works if you discover it from another player or get it thanks to Rafaam, though.
Discovering a minion from triples come from the pool
Now if it is a hero power with a copy like effect (mr. Bigglesworth, scabbs for example) it doesn’t come from the pool (i think)
Other situations that doesn’t come from the pool: murozond, reno jackson hero power (golden the minion without removing 2 others), tess, rafaam
I thought there was only limited copies of minions from t6. The others can be found indefinitely
Nope. There are specific number of each minion based on which tier they live on. I don’t have the chart, but feel free to look it up.
Yes.
It is not limited by the pool, but does remove from the pool.
These would be situation where it would give you the minion, then remove that from the pool, but the text allows these cards to generate more than the number in the pool. So even if all of the card was in use, you could get another copy this way.
Biggs would take the opponent’s copies, not make new ones. Scabs works like Murozond.
It does.
No
Yes and Yes
Yes
Yes, see above.