Leeching Licid is a uncommon Creature — Licid card from Tempest (TMP), collector number 141. Current market price: $0.16, TCGplayer market prices via Scryfall.
{B}, {T}: This creature loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {B} to end this effect. At the beginning of the upkeep of enchanted creature's controller, this creature deals 1 damage to that player.