Darkmaul Citadel

Darkmaul Citadel enters the battlefield tapped.
{t}: Add {b} to your mana pool.
{t}, Pay 2 life: Add {b}{b}{b}. Activate this ability
only if you control a black creature with power
2 or less.
{2}{b},{t}: Target creature gets -2/-2 until end of
turn. Activate this ability only if you control
a black creature with converted mana cost 4
or greater.