CardName: Story Keeper
Cost: 1g
Type: Creature - Elf Shaman
Pow/Tgh: 2/1
Rules Text: Preserve (Whenever a noncreature card enters your graveyard,
if there's no cards exiled with this, exile that card and
put a +1/+1 counter on this.)
When Story Keeper dies, return the exiled card to your hand.
Flavour Text:
Set/Rarity: Multiverse Design Challenge Rare
Story Keeper
R
Creature – Elf Shaman
Preserve (Whenever a noncreature card enters your graveyard, if there's no cards exiled with this, exile that card and put a +1/+1 counter on this.) When Story Keeper dies, return the exiled card to your hand.
See Sahalan Ideal and Challenge # 112 (for which I get an application error upon attempts to load it).
This is wordier than it seemed in my mind.