Like the classic M11/M12 titans, it triggers on ETB and on attack, so you can get a lot of mileage out of this card
To make my list a card must be good in general kitchen table play like multiplayer, Commander, Five Color, Type Four, Highlander, and more
On resolution of Arc Trail all 3 damage will be redirected to the bear that will then die heroically the next time SBA are performed
Rise of the Floodborn is set 2, Into the Inklands is set 3, Ursulas Return is set 4 and, as we now know, Shimmering Skies is the fifth set
Gilgamesh, Master-at-Arms builds also show interest in another staple of equipment decks: Blackblade Reforged, often seen in Nahiri decks and with cEDH potential alongside Kotis, the Fangkeeper
Mathemagics (Extended Art) As I said earlier, math is going to be a key component of the Quandrix college at Strixhaven, given that it's the school of Numeromancy