Consumed by History did not properly grant unearth when my Spirit Mascot was brought back by Scintillating Encore. The creature was correctly brought back with perpetual +2/+0, but when it died on a later turn it did not have the perpetual unearth 5 that it should have had. Scintillating Encore is not a replacement effect, so my understanding is that the creature should have had unearth perpetually, which I could have used on later turns.

Steps to reproduce:
1. play a nontoken creature with 3 or less toughness
2. cast Scintillating Encore on the creature
3. after Scintillating Encore has resolved, cast Consumed by History

Platform: PC

Actual Results:
The creature is brought back with perpetual +2/+0, but does not have perpetual unearth 5. It does not have perpetual unearth 5 if you hover over the creature while it is still on the battlefield, and also does not have unearth 5 when it is in the graveyard after being destroyed later.

Expected results:
The creature should return to the battlefield with +2/+0, but should also have the unearth 5 keyword when you hover over the card. When the creature is destroyed on a later turn, it should still have unearth 5, and I should be able to use the unearth ability from my graveyard.

Relevant Screenshot: see screenshot attached and see log files attached

Workaround: no relevant workaround

This occurred in a premier alchemy draft event.