Another tip I'd like to give is changing the HP displayed in each chunk of your health bar with a console command.
Since QoP's ulti deals pure damage now, if you set the HP chunks correctly, you can know when your ulti will kill the enemy.
dota_health_per_vertical_marker 290 for lvl 1, 390 for 2 and vice versa. If you ulti when the enemy has below 1 chunk of hp left, it will be an insta kill.
It's a tactic generally axe players use but I think it also works wonders for some nukers.
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