Staff, Uncommon, Attunement by a Cleric, Druid or Warlock
You can use an action to speak this staff's command word and throw the staff on the ground within 10 feet of you. The staff becomes a constrictor snake under your control and acts on its own initiative count. By using a bonus action to speak the command word again, you return the staff to its normal form in a space formerly occupied by the snake.
On your turn, you can mentally command the snake if it is within 60 feet of you and you aren't incapacitated. You decide what action the snake takes and where it moves during its next turn, or you can issue it a general command, such as to attack your enemies or guard a location. If the snake is reduced to 0 hit points, it dies and reverts to its staff form. The staff then shatters and is destroyed. If the snake reverts to staff form before losing all its hit points, it regains all of them.

A powerful staff that has caused our heroes a bit of trouble.

First discovered by our heroes deep in Memorial island off the coast of Sestone. Teo took it with him and got it appraised.
the staff was very rare and quite powerful but Teo was no mage and had no use for it so decided to sell it when he got the chance.

Teo sold the staff to a grumpy old wand maker in Sabersteel earning a small fortune.
later our heros raided a Bandit camp and after the battle when Teo looted the mage he found put that it was the same staff he had sold only days earlier but the staff was now broken due to the battle.

Teo took the shards thinking that they may be useful later.