How to get a zed Penta on poro king

So you want to get the zed pentarino on the howling abyss? Are you one of those guys who gets the quadra and then your adc flashes in to "save you." or you die right before that last auto. Well heres a proven way to make sure you get damage you need to slaughter all five of your oppenents...

Yes... zed zhonyas... the way it worked for me was to ult the back line carry, shadow dash on to the low healthies, zhonyas right before reksai does the knock up... let the team do some of the work... and secure that sweet penta with the zed passive

Good luck to all