Rylai's Crystal Scepter - the most unsuccessful item in the game

Hello there,

I was wondering if Rylai's Crystal Scepter works with some abilities and items. Results may be interesting...

Item description is:

UNIQUE PASSIVE: Damaging spells and abilities apply a Movement Speed reduction based on the spell type: Single Target: 40% reduction for 1,5 seconds. Area of Effect: 40% reduction for 1 seconds. Damage over Time or Multi-hit: 20% reduction for 1 seconds. Summoned Minions: 20% reduction for 1 seconds. (If a spell fits in more than one category, it uses the weakest slow value.)

Because Summoner Spells also are spells, I need to notice that none of them applies slow from Rylai's (yes, smite too).

Abilities that DOES NOT apply slow from Rylai's:

• Teemo's E (Toxic Shot) - Which is interesting, Singed's Q (Poison Trail) applies slow. Both abilities poisons the target.
• LeBlanc's Passive (Mirror Image) - It is not damaging ability. Did you know that LB's clone CANNOT deal damage even with basic attacks?
• Darius' W (Crippling Strike) - That's true that it's on-hit ability like Kayle's E (Rightenous Fury), but it isn't multi-hit. It just upgrades one basic attack.
• Draven's Q (Spinning Axe) - It isn't multi-hit. It's just ONE upgraded basic attack. If you catch an axe, you get another.
• Darius' and Twitch's passives - For no reason.

Items that DOES NOT apply slow from Rylai's:

• Banner of Command - _It isn't summoning a minion, but buffing.
• Rightenous Glory - Does not deal damage.
• Rightenous Glory - Does not deal damage.
• Zz'Rot Portal - For no reason.
• Sunfire Cape - For no reason.
• Tiamat (and Ravenous Hydra, Tytanic Hydra) - For no reason.
• Statikk Shiv (and Rapid Firecannon) - For no reason.
• Runaan's Hurricane - For no reason.
• Liandry's Torment - For no reason.
• Duskblade of Draktharr (Nightfall effect) - For no reason.

Abilities that DOES apply slow from Rylai's:

• Mordekaiser's R (Children of The Grave) - _Ghost's basic attacks are slowing opponents. Slow can be applied by champions as well as by dragons. _

Items that DOES apply slow from Rylai's:

• Bilgewater Cutlass (and Blade of the Ruined King, Hextech Gunblade)
• Luden's Echo
• Hextech Protobelt-01
• Hextech GLP-800
• Jungling items with "Runic Echoes" enchantment