What’s your goal? Are you very BGs oriented?
If they can’t fight Enchantress, she’ll be just as good at R2. I see you didn’t put Wiger on the list, she’s a great attacker and a decent defender. In some metas her powergain can be tricky to deal with.
my vote (surprise surprise): R3 Shathra and add R3 Iron Fist relic.
my vote (surprise surprise): R3 Shathra and add R3 Iron Fist relic. No Scarlett relic for that special spam damage?