Deadeye Archer

When Deadeye Archer enters the battlefield, up to one target creature gets -1/-1 until end of turn.
At the beginning of your upkeep, if you control three or more Goblins, up to one target creature gets -1/-1 until end of turn.
{b}{b}: Target creature gets -1/-1 until end of turn. Activate this ability only if you control five or more Goblins.