New Lethality Item idea: Anti-Janna Blade

Cost: 3500 Stats: 60 attack damage; 20 Lethality Passive - Inexhaustible: You're immune to damage reduction effects. Active - Nothing can save you: Marks the target enemy champion for 5 seconds. Shields and heals on the target will damage them instead. 90 Second cooldown - Resets if the target dies while under the effect.