If you can land your Gravity Lapse at 4, take Gravity Lapse instead of Verdant Spheres restore mana. Otherwise, the verdant spheres will keep you from needing to back too often for low mana as long as you stay with your healer. Your goal with this build and your attack strategy should be to click D, use W on one enemy hero, W on a different enemy hero, then if you can land an E - cast it, and immediately follow up with a Q beneath whoever is caught in gravity lapse. Your verdant spheres grant you different advantages for each basic ability you have so please read it over and practice a few times in try mode to get the rhythym down. The goal with this build is to cast living bomb as often as possible on as many enemy heroes as possible, the more they are forced to spread the living bomb, the more damage, zoning, and even kills your team will gain as they struggle to run away from you. At 16, your spell power will stack with these basic ability combos and your burst will increase slightly. Just remember, D, W, W on different enemy, E if you can land, Q, and repeat. Always Use D and then W so you get another Free living bomb to spread even more bombs. Common terminology for KT' living bomb is "aids," it kills for a reason - just make sure you get it spread.