Biting Tether
{4}{U}
Enchantment -- Aura
Enchant creature
You control enchanted creature.
At the beginning of your upkeep, put a -1/-1 counter on enchanted creature.
Glistening Oil
{B}{B}
Enchantment -- Aura
Enchant creature
Enchanted creature has infect.
At the beginning of your upkeep, put a -1/-1 counter on enchanted creature.
When ~this~ is put into a graveyard from the battlefield, return it to its owner's hand.