You're going to have a lot of different vampires with a lot of different powers, which means Redemption Choir is--at worst-- a Hill Giant with lifelink that can resurrect a three-mana critter
After going harder into the graveyard-stocking plan, adding better reanimation (Reanimate, Living Death, and Animate Dead) is another good way to up the power
Did the creature have some kind of leaves-the-battlefield effect, or an ability that would allow it to hang around
Before you decide where to settle in, run through a short readiness list that frames your priorities and reduces surprises once you start playing with real funds
For this particular card, having Equipment attached to Cloud or any other Creature lets you draw cards, per equipped Creature
[+1]: Draw a card, then discard a card