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Heimerdinger's missiles count as single target

Rylai's + Liandry's

Total cost: 5800

700 Health
150 AP
15 Spell Pen
35% slow on three targets
10% of their current health over 3

You become a MASSIVE poke threat and actually a pretty good initiator... Played a game last night where I just setup shop in the middle and everytime they came to gank me I threw my missiles, sent my turrets into overdrive and walked away leaving them with 30% of their health gone (often on 2 or 3 targets) with no ill effects for myself. I literally didn't die until they sent all 5 around the river behind me and ganked me as a team with nowhere to run. It was awesome ;)

Just a thing to try out.