When attacking with both Warwick and Anivia, do all enemies die before combat, and does the order of attack triggers matter?

Ruling: The order of attack triggers matters. To kill all enemies before combat, you must put Warwick's trigger on chain 1 and Anivia's trigger on chain 2.

Sequence:

• Chain 1: Warwick's attack trigger resolves (but sees no damaged enemies yet, so no effect)
• Chain 2: Anivia's attack trigger resolves, damaging all enemies
• If ordered correctly (Warwick chain 1, Anivia chain 2): Anivia damages enemies first (chain resolves backwards), then Warwick sees damaged enemies and kills them

Nuances:

• If you reverse the order (Anivia chain 1, Warwick chain 2), Warwick will resolve first and see no damaged enemies, then Anivia will damage after Warwick has already resolved, so enemies won't die before combat