Chainbreaker
{2}
Artifact Creature -- Scarecrow
3/3
~this~ enters with two -1/-1 counters on it.
{3}, {T}: Remove a -1/-1 counter from target creature.
Woeleecher
{5}{W}
Creature -- Elemental
3/5
{W}, {T}: Remove a -1/-1 counter from target creature. If you do, you gain 2 life.