Just messing around with the practice tool, I made a build with mobility boots, deadmans plate, 3 runic echoes, ghostblade, and with ghost and cloud drake hit about 1.5k movement speed on quinn. What build/champ combo would have the highest ms statistically?
Faie4 votesMalphite has the highest possible movespeed, using his Q to steal movespeed from an enemy malphite, and so on. There's a video of a malphite getting over 31 million movespeed or something.
Mysticman893 votes
With an enemy champ around for PD to give more movespeed, and the various actives used, while rammus is using powerball.
Loads of extra movespeed buffs from allies that could make him go even faster, but you don't have allies in practice tool to provide them.
Asayake 5150glow1 votes
With an enemy champ around for PD to give more movespeed, and the various actives used, while rammus is using powerball.
Loads of extra movespeed buffs from allies that could make him go even faster, but you don't have allies in practice tool to provide them.
Quinn is faster, she gets a %total movespeed amplifier rather than the %base movespeed which most things are.
Mysticman891 votesI'm not 100% on how %bonus versus %total increases are actually computed, but I'm pretty sure rammus has the top potential speed record if you include all the things allies can do (excluding the infinite malph case), since rammus's gets up to +140% bonus movespeed, contrasted with quinns 130% total movespeed buff. If the situation is such that an extra 10% bonus exceeds the value of +130% base, than rammus will end up being speedier while his powerball is fully spun up.
It's possible that in the solo-in-practice-tool scenario that quinn is faster due to lots of sources of bonus movespeed from allies being missed out on, but again I don't know precisely how the calculations work out. But hey, if people are screwing around in the practice tool anyway, one could test both.
MissingForeskin2 votes
+ ult +celerity
ItzAshLUL2 votes
Asayake 5150glow1 votesReplace one of the Luden's for a Triforce and last hit a minion for the 60 MS Phage active (Triforce also gives 5% movespeed) maybe? That might mess with the DMP though, wonder if the Phage ms would last long enough to build up DMP again.
DaNinad1 votesReplace one of the Luden's for a Triforce and last hit a minion for the 60 MS Phage active (Triforce also gives 5% movespeed) maybe? That might mess with the DMP though, wonder if the Phage ms would last long enough to build up DMP again.
yeah phage ms lasts for 2-4 seconds i think, deadmans takes a while to charge up
Cunky1 votes 
'nuff said.
[slayer-jinx-wink]
marco master12341 votesteemo w+ ghost and active ability ghost blade, boots of swiftness and 3 ludens echo and deadmans plate. 903 movement speed
derpface65681 votesnot really yi with mob boots tailismen of A Ghost blade Merc simitar and lich bane and ardent censer and home gaurd gives 2000 move speed with his ult and ghost*[slayer-pantheon-thumbs]*
YannickIsCool1 votes And ghost is insane
chiku1 votes
is probably one of the fastest
And teemo
Nicklam02701 votes ,for runes, bring Predator,sudden impact,eyeball collection, relentlesshunter(make sure u add a bot to kill for stack), inspiration on second tree, with slightly magical boots, and approach velocity(put allied dummies along the path of where ur gonna run) 
(for the 5% ms)