use your imagination
clockwerk: Q: karthus's E that hit the nearest enemy and mini-stun him everytime it procs W:jarvan's ulti around him, that also deals damage if people from outside hit the wall E: literally a global corki's Q R: semi-global amumu's Q with AOE stun, can hit allies to escape
I know only two Dota 2 heroes and I've only ever played one, so I'll try.
Axe (a pal said he was the easiest): Q: AOE Rammus Taunt, also increases armor. W: Like Mordekaiser ult, but with a slow, and no zombies. E: Passively Demacia's the snot out of people when they hit him. R: Darius' ult, no really, it's pretty much Darius' ult.
Rubick: telekinesis: point and click taliyah's W, stuns enemies where the target lands fade bolt: brand ulti without a bounce limit, can only bounce once per target, also reduces AD. null field: Kassadin passive in Aura spellsteal: spellsteal
Blademaster
Master Yi with a Healing Totem instead of a channeled heal.
