traitor

A variant of Illager that is hostile to players.
This mob has a low chance of being with the Illagers, but if the player gives the mob an emerald, he will turn over to the player and attack the Illagers to betray him.
However, it is only temporary, betraying and attacking the player who passed the emerald after defeating the Illagers with the player around.
When defeated, it drops a lot of emeralds.
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