Round1: Play Saskia (it helps to mill bronze cards) and the second option is playing Dana Meadbh (if you think opponent can't kill Dana)

Note1: I don't recommend to play both (Saskia and Dana) on round1

Round2: If your hand is very strong you can push it but I don't recommend it because Harmony is stronger on long rounds.

Note2: You can play Simlas early to mill Backup Plans.

Round3: Play Artifact and use a harmony unit to activate chapter 1, its not necessary to rush to chapter 2.

Note3: Try to play Lake Guardian late beware about Spores (Reset The Power Of An Unit).

Have a nice game - Ediz :)

https://www.youtube.com/@edizsevim