Caribou Range
Enchantment — Aura
Enchant land you control
Enchanted land has ", 
: Create a 0/1 white Caribou creature token."
Sacrifice a Caribou token: You gain 1 life.
Ruth Thompson
Rulings
You can only sacrifice a Caribou token to this, not any creature with the type Caribou.
(wotc • 2007-10-01)
Rulings
You can only sacrifice a Caribou token to this, not any creature with the type Caribou.
(wotc • 2007-10-01)