Morticia, The Marionette

At the beginning of each upkeep, put a colorless Equipment artifact token named Thread onto the battlefield. Equipped creature has "+1/+1" equip {3}. Puppets you control cannot attack or block
unless equipped with Thread and Morticia is
on the battlefield
Whenever a Puppet you control dies, attach
Thread to another target creature.
You control target creature as long as it's
equipped to Thread and Morticia is on the battlefield