In my campaign I'm going to be introducing the 'Cult of Juiblex' (something I've done in previous editions). For those who do not know the name, Juiblex is a first edition demon lord/god who takes the shape of a massive pile of goo. It (he/she/whatever) is the demon lord of oozes, and I've always sort of incorporated plant creatures like shambling mounds in there too.
So, once again I will be bringing this disgusting motiff to my gaming table and see where it takes me. With 4e allowing for such easy changes in 'fluff' I want to create a set of cleric powers and feats that would be cool for a cleric of Juiblex and make them stand out a bit. Basically I am just rewording some of the 'fluff' and keywords for some powers to make them seem more Juiblex-y. Of course, I welcome any and all help in fleshing this out.

Feats

Channel Divinity: Parasitic Surge
You call upon the favor of Juiblex to leech vitality off others.
Encounter - Divine, Healing
Immediate Interrupt - Ranged 5
Trigger: Another creature (enemy or ally) within range uses a healing surge.
Effect: The target receives only half (round up) the number of hit points from their surge, while you regain hitpoints as if you have spent a healing surge yourself.
Special: Use must take Parasitic Surge feat to use this power (prerequisite: Channel Divinity Class feature, must worship Juiblex).

Suggested Feat(s): Burning Blizzard,

Level 1 Powers

Acid Lance (replaces Lace of Faith)
You spit a thin stream of caustic saliva which sears your foes, lingering on the target and lowering its defenses. At Will - Divine, Implement, Acid
At Will - Divine, Implement, Acid
Standard Action - Ranged 5
Target: one creature
Attack: Wisdom vs. Reflex
Hit: 1d8 + wisdom modifier acid damage. The next attack roll against the target, before the end of your next turn, gains a +2 bonus.
Increase the damage to 2d8+ wisdom modifer at 21st level.
Spore Cloud (replacing Divine Glow)
With a prayer to your unclean lord, you emit a cloud of mold spores from your person. Where it touches your enemies their skin burns, while your allies gain a symbiotic boost.
Encounter - Divine, Implement, Necrotic, Acid
Standard Action - Close Blast 3
Target: Each enemy in blast
Attack: Wisdom vs. Reflex
Hit: 1d8+wis modifier Acid damage
Effect: Allies in the blast gain +2 power bonus to attack rolls until the end of your next turn.

Paralytic Wrath
Powered by Juiblex, your weapon secrets a numbing slime which paralyzes your enemies.
Encounter - Divine, Weapon
Standard Action - Melee Weapon
Target: One Creature
Attack: Strength vs. AC
Hit: 2[W] and the target is stunned until the end of your next turn.

Summon Ooze (replaces Guardian of Faith)
You conjure a foul puddle of ooze to aid you in battle. It flails psuedopods maddly at any foes that move next to it.
Daily - Conjuration, Divine, Implement, Acid
Standard Action - Ranged 5
Effect: You conjure a guardian ooze that occupies 1 square within range. Every round, you can move the guardian 3 squares as a move action. The guardian lasts until the end of the encounter. Any creature that ends its turn next to the conjured guardian is ubject to a Wisdom vs. Fortitude attack. On a hit, the attack deals 1d8 damage + Wisdom modifier acid damage.

Slime Sphere
A large ball of foul jelly forms in your hand, which you hurl at your foes. The jelly coats the target, hampering their mobility.
Daily - Divine, Implement, Acid
Standard Action - Ranged 10
Target: One Creature
Attack: Wisdom vs. Reflex
Hit: 3d8 + wisdom modifier and the target is slowed (save ends)
Miss: Half damage and target is not slowed.
Special: If the target moves on their turn, they cannot attempt a saving throw.

Level 2 Utility Powers

Liquid Movement
Your body softens and you move with an unnatural fluidity.
Encounter - Divine
Move Action - Personal
Effect: You can shift a number of squares equal to your speed

Level 5 Attack Powers

Engulf
Calling upon the lord of oozes, you point and your foe is engulfed by a gelatinous blob the coalesces upon it body.
Daily - Divine, Implement, Acid
Standard Action - Ranged 10
Target: one creature
Attack: Wis vs. Reflex
Hit: 2d6 + wis modifier acid damage. The target is also dazed and takes ongoing 5 acid damage (save ends both).