Overview
Valentina is a versatile hero due to her ultimate but the secret of mastering her is to master all heroes ultimates
Strengths
Her strength is that she can copy others ultimate but not all ultimates are useful.
Weaknesses
Using her without knowing other heroes ultimates can be difficult. Some heroes like popol and kupa have useless ultimate so don't copy it.
Roam
Getting enchanted talisman is essential for early to late game and using equipment with hybrid attack makes her more useful if there are any strong physical damage heroes.
Common
Common emblem makes her balanced and gives her higher HP for early game . Using agility and wilderness blessing is helpful for faster assistance . Since you are playing valentina as a roamer you won't need any damage emblem but rather a supportive emblem.
Battle Spell
Using flicker can be so useful specially if you know some freestyles.
Best With Arlott
When together, valentina stun gives enemies mark so arlott can use his 2nd skill more frequently.
Watch Out For Lukas
Valentina can become unstoppable if facing Lukas due to low cool down of his ultimate.