As a 5-color deck this slivers list has a lot of options
This weeks Deck Without Comment is Trostani and Her Angels
Also note that Gandalf will double your triggers for your legendary or artifact stuff entering or leaving the battlefield, like Solemn Simulacrum, Spine of Ish Sah, Ichor Wellspring or Astor, Bearer of Blades or even classics like Godo, Bandit Warlord
Finally, we have Induced Amnesia, which seemed like a good idea on paper but was pretty bad in practice, and we ended up sideboarding it out in most of our matches
The deck runs a lot of janky looking cards that are reliant on Hallar to work, but if the commander sticks on the battlefield then you can pull off some seriously explosive turns and kill the table in a hurry
Night Soil (Honorable Mention) Recurring graveyard interaction that also puts bodies on the board is pretty sweet