Kerrigan by predi

Level 1 - sustain
Assimilation Mastery: You receive doubled health and mana regen while Assimilation Shield is active
quest: reaching maximum shields will extend its duration for 1 seconds. Stacks 15 rimes. After Reaching 15 stacks, The Shield remains indefiniately.
Clean Kills: If Leaping Strike kills its target, it refunds it mana cost, and resets the cooldown
quest: killing a minion or a Hero with Leaping strike grants 1 or 2 stacks respectively. upon reaching 15 stacks Leaping Strikes will now also

Single target damage:
Clean Kills - Psionic