Save your MasterBall for the Ledgendary dog (Suicune, Entei or Raikou). Don't use it on Mewtwo because it is really easy to catch him with just ultra balls. Just make sure you save before you fight Mewtwo :)
Chat with our AI personalities
Yes, if you have a Pokemon hold a Master Ball and then trade the Pokemon, you will have transfered the Master Ball.
Mewtwo I guess????
no it won't be holding a master ball cos when you used the master ball to catch a certain Pokemon, the master ball will be gone in your inventory because it is a consumable.
No.
On a certain Pokemon that you want to catch and it's hard to catch it with just a Poke Ball, a Great Ball, or an Ultra Ball. I don't know where else you can get Master Balls besides the Silph Co. I usually use the Masterball on legendery Pokemon.