How convenient! I have this neat little concept for a support yordle (since there are tons of midlane and toplane yordles, and a few adc yordles already).
P: Will to Live
Health regeneration of nearby allies is increased based on the distance from [yordle] to them, up to 1000/1500/2000%. Maximum range: 600.
Q: Transfusion
Deals 60/100/140/180/220 (+%60AP) magic damage in an area to enemies, keeping the damage dealt in a vial. Activate Q on an ally within 4 seconds to heal them for the amount kept in the vial, or until they are fully healed.
Vial Capacity: 120/200/280/360/440 + (120% AP)
W: Purification
Cast on herself or an ally to cleanse all CC and debuffs affecting them, giving them 20/30/40/50/60% bonus movement speed for 1.5 seconds.
E: Sterilization
Suppresses target for 2 seconds, dealing 10/20/30/40/50 (+15% AP) magic damage to them per second over 4 seconds.
R: Martyrdom
For 8 seconds, 30/45/60% of incoming damage being dealt to her allies within passive range is instead dealt to [yordle]. At the end of the duration, or after 2 seconds of not taking damage during the ultimate's active, any ally within her passive range is healed for the amount of damage that was dealt to her.
As you can see, she's basically in a nurse costume.