Resolved Slice from the Shadows solves Burning Mask

[SirTArt]

My opponent cast Slice from the Shadows on my Leonin Relic Warder ,then attacked with a dog token and Gearbane Orangutan. At the end phase Case of the Burning Mask was solved. Game code is 868049534.

 

[Carton]

The actual bug has nothing to do with Slice from the Shadows, and is actually that Burning Mask Case solves from only 2 sources of damage.

 

[SynthAura]

The actual bug has nothing to do with Slice from the Shadows, and is actually that Burning Mask Case solves from only 2 sources of damage.

I've actually seen it activate without only one source of damage, the 3 damage from the card itself.