2020-09-25 : Expedition Diviner has just one instance of its triggered ability, no matter how many other Wizards you control beyond the first.

2020-09-25 : If Expedition Diviner dies at the same time that each other Wizard you control leaves the battlefield, its ability triggers. For example, if the only creatures you control are two Expedition Diviners and both die at the same time, their abilities each trigger.