Translations:Boss Pokémon/29/en
From Pixelmon Wiki
For example, a player who has not obtained any Mega Stones or a Mega Bracelet defeats a boss Mega Venusaur. The Venusaur is guaranteed to yield a Mega Bracelet and a Venusaurite. If the player finds another boss Mega Venusaur, there is a chance that the boss will drop a second Venusaurite for the player upon defeat. If the player later finds a boss Mega Blastoise, the Blastoise will be guaranteed to drop a Blastoisinite because it is the first Mega Blastoise that the player has defeated.