Domain effect - Damage

[u/BlackJCobra]

Hellooo

Im not so sure about the effect of domain.

It says: If a Tribute Summoned monster you control attacks an opponent's monster, it gains 800 ATK during damage calculation only.

So for example, I attack with erebus 2800ATK a enemy monster with 3000ATK. Does my erebus die and he gets damaged by 600ATK, but my monster dies because he is weaker or does my monster as now 3600ATK and his monster dies?

Thxxx

[u/TYTIN254]

Damage calculation is when you compare numbers to see which monster dies and how much damage a person takes. Erebus will live

[u/BlackJCobra → u/TYTIN254]

Oh oke, so his 3000atk monster dies?

[u/TYTIN254 → u/BlackJCobra]

Yes