Twistwood Stalker

Nightmare 3 - {1}{b} (You may cast this card for {1}{b}. If you do, it enters the battlefield with 3
dream counters. At the beginning of your upkeep,
remove a dream counter. Creatures with dream
counters on them are enchantments and lose all other
card types.)
Whenever a creature an opponent controls
attacks alone, that creature gets -1/-1 until end
of turn.