Mystical Magical Whimsical Wand of Bubbles [Item Suggestions]

I'd like to introduce three item concepts I made just for fun; as an exercise you may say. They're all based on Mana, as it can be a bit of a redundant stat in League. Some champions have to heavily invest in it to remain aggressive, while others can simply pay with the warm blood flowing through their veins. It's unfair, innit?
Now anyways, they're all Utility Items, so keep that in mind. They aren't for all champions. Especially Riven. Though they might be better for Supports, or Tanks.

River Stone

• Recipe: Rejuvenation Bead + Mana Crystal + 270 Gold = 850 Gold
• 250 Mana
• 50% base Health Regen per 5 seconds
• UNIQUE Active: Grants a shield that absorbs 50 (+1% maximum Mana) damage for 1.5 seconds and grants 10% Movement Speed while the shield lasts. 60 second cooldown.

The first item is River Stone. It could look like a sparkly stone or a shell or something. It builds out of Rejuvenation Bead and Mana Crystal, as that is one of the few advanced item combinations still open.
It's stats are rather redundant, but it has a rather interesting, if weak, active. It grants you a shield and some Movement Speed for some while. It's better than nothing, right? It's only supposed to be a bridge item. Buy the other components first if you don't like it ;)

Mystical Magical Whimsical Wand of Bubbles

• Recipe: River Stone + Blasting Wand + 540 Gold = 2250 Gold
• 50 Ability Power
• 300 Mana
• 50% base Health Regen per 5 seconds
• UNIQUE Passive: Grants Health Regen per 5 seconds equal to 1% of your maximum Mana.
• UNIQUE Passive: Holds up to 3 charges. Refills one charge every 45 seconds or all upon visiting the shop.
• UNIQUE Active: Consumes a charge and grants a target allied champion a shield that absorbs 50 (+1% maximum Mana) damage for 2 seconds and grants 10% Movement Speed while it lasts. 0.1 second cooldown. Shield and Movement Speed can stack up to 3 times.

I actually quite like that name. Wouldn't it be hilarious if Riot actually considered it for a new item? It would be ^^
Anyways, this is the main item for more ranged orientated champions, like Supports. The stats, again, are rather redundant. Even the passive that grants you some 40 HP5 at most. But the active, eh? The active allows you to give a champion a shield worth 150 (+3% maximum Mana) and 30% Movement Speed for up to 5.77 seconds. I know Hecarim would like it. A kiting Marksman would like it. Riven would like it. Anyone would, really. Well almost anyone. Maybe not Lee Sin, because he wouldn't even notice it. Or Kalista. She'd be all like: "Did I feel a breeze?".
^^
The animation would be a bubble-y shield around the champion, like the name suggests. The item pic would look like a unicorn horn. Because why not?

Siren's Call

• Recipe: River Stone + Crystalline Bracer + Mana Crystal + 750 Gold = 2600 Gold
• 700 Mana
• 300 Health
• 150% base Health Regen
• UNIQUE Passive: All champions gain +6% Movement Speed when walking towards you.
• UNIQUE Aura: Nearby enemy champions have their Movement Speed reduced by up to 10% over 2 seconds (700 range).
• UNIQUE Active: Grants a shield that absorbs 50 (+1% maximum Mana) (+5 per level) damage for 2 seconds and grants 10% Movement Speed while the shield persists. 45 second cooldown.

And this is the more melee orientated version. It's a bit complicated, so let me explain:

• Stats = redundant
• First passive = melodic lure, according to the Sirens' lore
• 2nd passive = Oh, noes! A trap! Yeah, no, enemies around you are slowed by up to 10%. This amount is reduced to 4.6% if they are still walking towards you, but you get the memo
• And the Active is just a slightly stronger version of River Stone

Got it? Good.

I like to delude myself by saying these items are balanced, whether positively or negatively. But they are interesting and would definitely fulfill at least a larger-than-normal niche in the game.
Tanks like Amumu would love Siren's Call. If they got it alongside Frozen Heart, they wouldn't have any Mana problems anymore.
And champions like Soraka would love Mystical Magical Whimsical Wand of Bubbles, as it gives her Health Regen outside of her ridiculously low base Health Regen alongside some other useful stats and allows her to help her team without sacrificing her own life.

So, any thoughts? Feedback? Suggestions? Smileys?
No? Thanks for 'reading' anyways (I know you only looked at the items and read none of the text >_>).