[Champion] Faunte The Recoverer of Lost Souls

Keep in mind this is my first concept and I'm not great with the numbers and lore, but if you would like to give me ideas on what they should be they would be greatly appreciated :D

Lore: (From Shadow Isles) Rivalry against thresh. Fear of Mordekaiser Friend to Kalista

Abilities:

Passive: Stake Faunte gives 10% of his AD and 20% of his AP away to any ally shielded by Entrust.

Q: Entrust/Stripping Strikes (Toggle able Passive) Cost: 20/17/15/13 Mana Per Basic Attack Entrust: Faunte gains the ability to basic attack a single allied champion granting them a shield per attack (Max 75/145/225/400 health). Stripping Strikes: Faunte may auto an enemy champion dealing an extra 7/10/15/17 damage and reducing armor by 5/7/10/12% over 5/7/9/9 seconds.
You may not have Entrust/Strip on a champion if its counterpart is activated on a new champ. (Like Vayne's W)

W: Tend Cost: 90/85/80/80 Mana Cooldown: 17/15/15/13.5 sec Range: 450 When Faunte gives any shield to an allied champion, he has the ability to receive a shield with 75% health of the allied champion's shield for 5 seconds.

E: Vitiate Cost: 60/60/55/55 Mana Cooldown: 18/16/15.5/15 sec Range: 630 Faunte selects an enemy champion, draining their Magic Resistance and damaging them for 10/12/25/27 magic damage per second for 4 seconds snaring them if they are still in range by the end. (Maybe could scale in distance like Nidalee's Spear)

R: Belie/Rectify Cost: 120/100/95 Mana Cooldown: 80/60/45 Range: 520 Belie: On the first cast, Faunte steals quarter/quarter/half of a single enemy champion's attack damage (Max 300) and ability power (Max 500) for five seconds. Rectify: On the second cast, Faunte cast the ult doing AoE true damage (50/60/75% of stolen damage) to the enemy team, and an AoE heal (15% of stolen damage) to his own team.

Focus: Faunte is a support champion that needs a high damage dealing marksman in lane, and mage/assassin, capitalizing on the shield, its passive and his debuffing. The main point of this champ is to make the hard carry tanky while also weakening the other team for the carry. He would need a lot of skill to pick up and master, but He could become very strong in competitive play as he could fit in with a lot of comps and make them even stronger.

Strong with: Kogmaw: This is very obvious as the the Juggermaw comp could become stronger or have a second support pick for it. Sejuani: How do we make one of the strongest tank junglers in the game tankier. Give her a 600 hp shield. Katarina: One way to counter Kat is to get lots of Magic Resist and, or burst her down when ever she ults. Just lower the enemy's mr a little and give her a shield and she could ult freely, now about that cc :P.

Weak Against: Lissandra: Practically any champ with lockdown can take the carry with the shield out of the fight, but Liss can make them untargetable by Faunte and his shields. Teemo: Teemo's blind can affect Faunte also, making him and his q passive compelety useless in teamfights. Bard: This one is a bit weird but it is true. Bard's heal and stun will make Faunte weak during laning phase and his ult could lockdown Faunte rendering him useless or the shielded carry making him and them useless.

EDIT 1: Fixed e damage (no more instadeath level 1), ranges and ability ratios. Taking Name Suggestions Cause I Suck at Names