Hello Biggles, this Morigesh build and strategy seem to focus on maximizing her damage output and sustainability in the mid to late game. The use of her Q and E abilities to deal significant magic damage and apply slows and damage reduction to enemies is a good approach. Additionally, the strategy of passing through enemies with E to gain health regen and slow them down while escaping is a clever way to utilize her kit.

The item build also complements her damage potential and sustainability, with items like the Endgame set providing a good balance of health, mana, magical power, and cooldown reduction. The addition of magical vamp through items and her ultimate's passive effect is an interesting choice, which can help her sustain in fights.

However, one consideration could be the timing of item purchases, especially regarding when to build Cultist's Blow and Ekidna's Embrace. It might be beneficial to experiment with the order of item acquisition