Forbidden Friendship

Enchant Creature
Enchanted Creature gains Soulbond (You may
pair this creature with another unpaired creature when
either enters the battlefield. They remain paired for as
long as you control both of them.)
As long the Enchanted Creature is paired with
another creature, each of those gains +1/+1 and
one ability of its controller's choice during each
upkeep until the end of the turn: Deathtouch,
Heproof, or Lifelink