hi,nice guide, but there are a lot of things that might mislead new players..

1-Serpents Mask is TERRIBLE on Krul since he already has tons of lifesteal and your A gives you the barrier if needed for initiating/building stacks.
2-Tension Bow is perfect if you are facing squishies,but Tornado Trigger is a lot better if your team has few squishies since you will have to initiate.
3-Please mention the ELO this guide is for, cause these builds wont work above Tier 6.

Please forgive if i sound too rude