In the Wild format, umbra is not triggering the Deathrattle of the summoned treants from Grove Shaper. Not sure if this is intended since the treant deathrattle is dynamic and not innate to the treant. Wording of umbra makes me think it should work since the token is summoned w/ the deathrattle
Umbra reads “after” so it should work with a minion granted deathrattle on summon
If it was “whenever” then it would be bound to the technicality of how the deathrattle is granted
May require testing for consistency with other cards but it should trigger it