User blog comment:Rowtuh/Maple, the Sin Ward/@comment-4842032-20120328202747

The passive seems weak, but if you look at it as a 10% damage reduction, it's strong.

Her overall abilities are quite powerful. I feel like E would be maxed very quickly, so that the lane would never have to leave. 10% free spell vamp and lifesteal is insanely useful for a carry, especially ones that normally have rough laning phases (Vayne). Can you picture a Vayne with 16% lifesteal, boosting 35% AS every 14 seconds? Yeah, domination. Plus, late game, she can grant 25% (15% + her passive) damage reduction, 30 MR, 25 armor, and can silence the enemy AP carry. That's some crazy support.. and it's mana free, practically.

The only weakness would be the lack of an escape ability or movement speed boosting, but she has a long duration slow and some silence, so it's harder to chase than on others.