User blog comment:Emptylord/2017 Patch Notes (Unofficial)/@comment-3391671-20170701200609/@comment-3974211-20170702173900

The mana refund on-kill at rank-5 is higher than the rank-5 cost of his Q, so killing things with his Q is effectively free once both skills are maxed - and even before then, good uses of his Q are still free (e.g. killing multiple minions).

Yeah, she's weird to me too. I kinda wish they'd made her Kassadin's daughter and gone with a more void-y approach - like everyone thought when she was teased. Instead we got a second Orianna. My explorations probably aren't what any Syndra player would want, though.

There's still people who don't know Zilean's ult'd them - so I think it's a bit optimistic to say "Yorick told them in advance" and that means people paid attention. To be honest, if you're in lane with her, you should expect it after level 6 - to the extent it will likely happen every time you die, unless you're feeding super hard. In team fights, you shouldn't be shopping after death anyway - that's spectating-the-carnage time. ;)